/trunk/wb/include/yui/dragdrop/dragdrop.js - Annotate - WB 2.08.x - Tracking

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-            doc
+/*
-            kweitzel
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
-            doc
+Code licensed under the BSD License:
 http://developer.yahoo.net/yui/license.txt
-            kweitzel
+version: 2.8.0r4
-            doc
+*/
 /**
  * The drag and drop utility provides a framework for building drag and drop
  * applications.  In addition to enabling drag and drop for specific elements,
  * the drag and drop elements are tracked by the manager class, and the
  * interactions between the various elements are tracked during the drag and
  * the implementing code is notified about these important moments.
  * @module dragdrop
  * @title Drag and Drop
  * @requires yahoo,dom,event
  * @namespace YAHOO.util
  */
 // Only load the library once.  Rewriting the manager class would orphan
 // existing drag and drop instances.
 if (!YAHOO.util.DragDropMgr) {
 /**
  * DragDropMgr is a singleton that tracks the element interaction for
  * all DragDrop items in the window.  Generally, you will not call
  * this class directly, but it does have helper methods that could
  * be useful in your DragDrop implementations.
  * @class DragDropMgr
  * @static
  */
 YAHOO.util.DragDropMgr = function() {
-            kweitzel
+    var Event = YAHOO.util.Event,
         Dom = YAHOO.util.Dom;
             doc
     return {
         /**
-            kweitzel
+        * This property is used to turn on global use of the shim element on all DragDrop instances, defaults to false for backcompat. (Use: YAHOO.util.DDM.useShim = true)
         * @property useShim
         * @type Boolean
         * @static
         */
         useShim: false,
         /**
         * This property is used to determine if the shim is active over the screen, default false.
         * @private
         * @property _shimActive
         * @type Boolean
         * @static
         */
         _shimActive: false,
         /**
         * This property is used when useShim is set on a DragDrop object to store the current state of DDM.useShim so it can be reset when a drag operation is done.
         * @private
         * @property _shimState
         * @type Boolean
         * @static
         */
         _shimState: false,
         /**
         * This property is used when useShim is set to true, it will set the opacity on the shim to .5 for debugging. Use: (YAHOO.util.DDM._debugShim = true;)
         * @private
         * @property _debugShim
         * @type Boolean
         * @static
         */
         _debugShim: false,
         /**
         * This method will create a shim element (giving it the id of yui-ddm-shim), it also attaches the mousemove and mouseup listeners to it and attaches a scroll listener on the window
         * @private
         * @method _sizeShim
         * @static
         */
         _createShim: function() {
             var s = document.createElement('div');
             s.id = 'yui-ddm-shim';
             if (document.body.firstChild) {
                 document.body.insertBefore(s, document.body.firstChild);
             } else {
                 document.body.appendChild(s);
+            }
             s.style.display = 'none';
             s.style.backgroundColor = 'red';
             s.style.position = 'absolute';
             s.style.zIndex = '99999';
             Dom.setStyle(s, 'opacity', '0');
             this._shim = s;
             Event.on(s, "mouseup",   this.handleMouseUp, this, true);
             Event.on(s, "mousemove", this.handleMouseMove, this, true);
             Event.on(window, 'scroll', this._sizeShim, this, true);
         },
         /**
         * This method will size the shim, called from activate and on window scroll event
         * @private
         * @method _sizeShim
         * @static
         */
         _sizeShim: function() {
             if (this._shimActive) {
                 var s = this._shim;
                 s.style.height = Dom.getDocumentHeight() + 'px';
                 s.style.width = Dom.getDocumentWidth() + 'px';
                 s.style.top = '0';
                 s.style.left = '0';
+            }
         },
         /**
         * This method will create the shim element if needed, then show the shim element, size the element and set the _shimActive property to true
         * @private
         * @method _activateShim
         * @static
         */
         _activateShim: function() {
             if (this.useShim) {
                 if (!this._shim) {
                     this._createShim();
+                }
                 this._shimActive = true;
                 var s = this._shim,
                     o = '0';
                 if (this._debugShim) {
                     o = '.5';
+                }
                 Dom.setStyle(s, 'opacity', o);
                 this._sizeShim();
                 s.style.display = 'block';
+            }
         },
         /**
         * This method will hide the shim element and set the _shimActive property to false
         * @private
         * @method _deactivateShim
         * @static
         */
         _deactivateShim: function() {
             this._shim.style.display = 'none';
             this._shimActive = false;
         },
         /**
         * The HTML element created to use as a shim over the document to track mouse movements
         * @private
         * @property _shim
         * @type HTMLElement
         * @static
         */
         _shim: null,
         /**
-            doc
+         * Two dimensional Array of registered DragDrop objects.  The first
          * dimension is the DragDrop item group, the second the DragDrop
          * object.
          * @property ids
          * @type {string: string}
          * @private
          * @static
          */
         ids: {},
         /**
          * Array of element ids defined as drag handles.  Used to determine
          * if the element that generated the mousedown event is actually the
          * handle and not the html element itself.
          * @property handleIds
          * @type {string: string}
          * @private
          * @static
          */
         handleIds: {},
         /**
          * the DragDrop object that is currently being dragged
          * @property dragCurrent
          * @type DragDrop
          * @private
          * @static
          **/
         dragCurrent: null,
         /**
          * the DragDrop object(s) that are being hovered over
          * @property dragOvers
          * @type Array
          * @private
          * @static
          */
         dragOvers: {},
         /**
          * the X distance between the cursor and the object being dragged
          * @property deltaX
          * @type int
          * @private
          * @static
          */
         deltaX: 0,
         /**
          * the Y distance between the cursor and the object being dragged
          * @property deltaY
          * @type int
          * @private
          * @static
          */
         deltaY: 0,
         /**
          * Flag to determine if we should prevent the default behavior of the
          * events we define. By default this is true, but this can be set to
          * false if you need the default behavior (not recommended)
          * @property preventDefault
          * @type boolean
          * @static
          */
         preventDefault: true,
         /**
          * Flag to determine if we should stop the propagation of the events
          * we generate. This is true by default but you may want to set it to
          * false if the html element contains other features that require the
          * mouse click.
          * @property stopPropagation
          * @type boolean
          * @static
          */
         stopPropagation: true,
         /**
          * Internal flag that is set to true when drag and drop has been
          * initialized
          * @property initialized
          * @private
          * @static
          */
         initialized: false,
         /**
          * All drag and drop can be disabled.
          * @property locked
          * @private
          * @static
          */
         locked: false,
         /**
          * Provides additional information about the the current set of
          * interactions.  Can be accessed from the event handlers. It
          * contains the following properties:
+         *
          *       out:       onDragOut interactions
          *       enter:     onDragEnter interactions
          *       over:      onDragOver interactions
          *       drop:      onDragDrop interactions
          *       point:     The location of the cursor
          *       draggedRegion: The location of dragged element at the time
          *                      of the interaction
          *       sourceRegion: The location of the source elemtn at the time
          *                     of the interaction
          *       validDrop: boolean
          * @property interactionInfo
          * @type object
          * @static
          */
         interactionInfo: null,
         /**
          * Called the first time an element is registered.
          * @method init
          * @private
          * @static
          */
         init: function() {
             this.initialized = true;
         },
         /**
          * In point mode, drag and drop interaction is defined by the
          * location of the cursor during the drag/drop
          * @property POINT
          * @type int
          * @static
          * @final
          */
         POINT: 0,
         /**
          * In intersect mode, drag and drop interaction is defined by the
          * cursor position or the amount of overlap of two or more drag and
          * drop objects.
          * @property INTERSECT
          * @type int
          * @static
          * @final
          */
         INTERSECT: 1,
         /**
          * In intersect mode, drag and drop interaction is defined only by the
          * overlap of two or more drag and drop objects.
          * @property STRICT_INTERSECT
          * @type int
          * @static
          * @final
          */
         STRICT_INTERSECT: 2,
         /**
          * The current drag and drop mode.  Default: POINT
          * @property mode
          * @type int
          * @static
          */
         mode: 0,
         /**
          * Runs method on all drag and drop objects
          * @method _execOnAll
          * @private
          * @static
          */
         _execOnAll: function(sMethod, args) {
             for (var i in this.ids) {
                 for (var j in this.ids[i]) {
                     var oDD = this.ids[i][j];
                     if (! this.isTypeOfDD(oDD)) {
                         continue;
+                    }
                     oDD[sMethod].apply(oDD, args);
+                }
+            }
         },
         /**
          * Drag and drop initialization.  Sets up the global event handlers
          * @method _onLoad
          * @private
          * @static
          */
         _onLoad: function() {
             this.init();
             Event.on(document, "mouseup",   this.handleMouseUp, this, true);
             Event.on(document, "mousemove", this.handleMouseMove, this, true);
             Event.on(window,   "unload",    this._onUnload, this, true);
             Event.on(window,   "resize",    this._onResize, this, true);
             // Event.on(window,   "mouseout",    this._test);
         },
         /**
          * Reset constraints on all drag and drop objs
          * @method _onResize
          * @private
          * @static
          */
         _onResize: function(e) {
             this._execOnAll("resetConstraints", []);
         },
         /**
          * Lock all drag and drop functionality
          * @method lock
          * @static
          */
         lock: function() { this.locked = true; },
         /**
          * Unlock all drag and drop functionality
          * @method unlock
          * @static
          */
         unlock: function() { this.locked = false; },
         /**
          * Is drag and drop locked?
          * @method isLocked
          * @return {boolean} True if drag and drop is locked, false otherwise.
          * @static
          */
         isLocked: function() { return this.locked; },
         /**
          * Location cache that is set for all drag drop objects when a drag is
          * initiated, cleared when the drag is finished.
          * @property locationCache
          * @private
          * @static
          */
         locationCache: {},
         /**
          * Set useCache to false if you want to force object the lookup of each
          * drag and drop linked element constantly during a drag.
          * @property useCache
          * @type boolean
          * @static
          */
         useCache: true,
         /**
          * The number of pixels that the mouse needs to move after the
          * mousedown before the drag is initiated.  Default=3;
          * @property clickPixelThresh
          * @type int
          * @static
          */
         clickPixelThresh: 3,
         /**
          * The number of milliseconds after the mousedown event to initiate the
          * drag if we don't get a mouseup event. Default=1000
          * @property clickTimeThresh
          * @type int
          * @static
          */
         clickTimeThresh: 1000,
         /**
          * Flag that indicates that either the drag pixel threshold or the
          * mousdown time threshold has been met
          * @property dragThreshMet
          * @type boolean
          * @private
          * @static
          */
         dragThreshMet: false,
         /**
          * Timeout used for the click time threshold
          * @property clickTimeout
          * @type Object
          * @private
          * @static
          */
         clickTimeout: null,
         /**
          * The X position of the mousedown event stored for later use when a
          * drag threshold is met.
          * @property startX
          * @type int
          * @private
          * @static
          */
         startX: 0,
         /**
          * The Y position of the mousedown event stored for later use when a
          * drag threshold is met.
          * @property startY
          * @type int
          * @private
          * @static
          */
         startY: 0,
         /**
          * Flag to determine if the drag event was fired from the click timeout and
          * not the mouse move threshold.
          * @property fromTimeout
          * @type boolean
          * @private
          * @static
          */
         fromTimeout: false,
         /**
          * Each DragDrop instance must be registered with the DragDropMgr.
          * This is executed in DragDrop.init()
          * @method regDragDrop
          * @param {DragDrop} oDD the DragDrop object to register
          * @param {String} sGroup the name of the group this element belongs to
          * @static
          */
         regDragDrop: function(oDD, sGroup) {
             if (!this.initialized) { this.init(); }
             if (!this.ids[sGroup]) {
                 this.ids[sGroup] = {};
+            }
             this.ids[sGroup][oDD.id] = oDD;
         },
         /**
          * Removes the supplied dd instance from the supplied group. Executed
          * by DragDrop.removeFromGroup, so don't call this function directly.
          * @method removeDDFromGroup
          * @private
          * @static
          */
         removeDDFromGroup: function(oDD, sGroup) {
             if (!this.ids[sGroup]) {
                 this.ids[sGroup] = {};
+            }
             var obj = this.ids[sGroup];
             if (obj && obj[oDD.id]) {
                 delete obj[oDD.id];
+            }
         },
         /**
          * Unregisters a drag and drop item.  This is executed in
          * DragDrop.unreg, use that method instead of calling this directly.
          * @method _remove
          * @private
          * @static
          */
         _remove: function(oDD) {
             for (var g in oDD.groups) {
-            kweitzel
+                if (g) {
                     var item = this.ids[g];
                     if (item && item[oDD.id]) {
                         delete item[oDD.id];
+                    }
             doc
             kweitzel
             doc
             delete this.handleIds[oDD.id];
         },
         /**
          * Each DragDrop handle element must be registered.  This is done
          * automatically when executing DragDrop.setHandleElId()
          * @method regHandle
          * @param {String} sDDId the DragDrop id this element is a handle for
          * @param {String} sHandleId the id of the element that is the drag
          * handle
          * @static
          */
         regHandle: function(sDDId, sHandleId) {
             if (!this.handleIds[sDDId]) {
                 this.handleIds[sDDId] = {};
+            }
             this.handleIds[sDDId][sHandleId] = sHandleId;
         },
         /**
          * Utility function to determine if a given element has been
          * registered as a drag drop item.
          * @method isDragDrop
          * @param {String} id the element id to check
          * @return {boolean} true if this element is a DragDrop item,
          * false otherwise
          * @static
          */
         isDragDrop: function(id) {
             return ( this.getDDById(id) ) ? true : false;
         },
         /**
          * Returns the drag and drop instances that are in all groups the
          * passed in instance belongs to.
          * @method getRelated
          * @param {DragDrop} p_oDD the obj to get related data for
          * @param {boolean} bTargetsOnly if true, only return targetable objs
          * @return {DragDrop[]} the related instances
          * @static
          */
         getRelated: function(p_oDD, bTargetsOnly) {
             var oDDs = [];
             for (var i in p_oDD.groups) {
                 for (var j in this.ids[i]) {
                     var dd = this.ids[i][j];
                     if (! this.isTypeOfDD(dd)) {
                         continue;
+                    }
                     if (!bTargetsOnly || dd.isTarget) {
                         oDDs[oDDs.length] = dd;
+                    }
+                }
+            }
             return oDDs;
         },
         /**
          * Returns true if the specified dd target is a legal target for
          * the specifice drag obj
          * @method isLegalTarget
          * @param {DragDrop} the drag obj
          * @param {DragDrop} the target
          * @return {boolean} true if the target is a legal target for the
          * dd obj
          * @static
          */
         isLegalTarget: function (oDD, oTargetDD) {
             var targets = this.getRelated(oDD, true);
             for (var i=0, len=targets.length;i<len;++i) {
                 if (targets[i].id == oTargetDD.id) {
                     return true;
+                }
+            }
             return false;
         },
         /**
          * My goal is to be able to transparently determine if an object is
          * typeof DragDrop, and the exact subclass of DragDrop.  typeof
          * returns "object", oDD.constructor.toString() always returns
          * "DragDrop" and not the name of the subclass.  So for now it just
          * evaluates a well-known variable in DragDrop.
          * @method isTypeOfDD
          * @param {Object} the object to evaluate
          * @return {boolean} true if typeof oDD = DragDrop
          * @static
          */
         isTypeOfDD: function (oDD) {
             return (oDD && oDD.__ygDragDrop);
         },
         /**
          * Utility function to determine if a given element has been
          * registered as a drag drop handle for the given Drag Drop object.
          * @method isHandle
          * @param {String} id the element id to check
          * @return {boolean} true if this element is a DragDrop handle, false
          * otherwise
          * @static
          */
         isHandle: function(sDDId, sHandleId) {
             return ( this.handleIds[sDDId] &&
                             this.handleIds[sDDId][sHandleId] );
         },
         /**
          * Returns the DragDrop instance for a given id
          * @method getDDById
          * @param {String} id the id of the DragDrop object
          * @return {DragDrop} the drag drop object, null if it is not found
          * @static
          */
         getDDById: function(id) {
             for (var i in this.ids) {
                 if (this.ids[i][id]) {
                     return this.ids[i][id];
+                }
+            }
             return null;
         },
         /**
          * Fired after a registered DragDrop object gets the mousedown event.
          * Sets up the events required to track the object being dragged
          * @method handleMouseDown
          * @param {Event} e the event
          * @param oDD the DragDrop object being dragged
          * @private
          * @static
          */
         handleMouseDown: function(e, oDD) {
-            kweitzel
+            //this._activateShim();
             doc
             this.currentTarget = YAHOO.util.Event.getTarget(e);
             this.dragCurrent = oDD;
             var el = oDD.getEl();
             // track start position
             this.startX = YAHOO.util.Event.getPageX(e);
             this.startY = YAHOO.util.Event.getPageY(e);
             this.deltaX = this.startX - el.offsetLeft;
             this.deltaY = this.startY - el.offsetTop;
             this.dragThreshMet = false;
             this.clickTimeout = setTimeout(
                     function() {
                         var DDM = YAHOO.util.DDM;
                         DDM.startDrag(DDM.startX, DDM.startY);
                         DDM.fromTimeout = true;
                     },
                     this.clickTimeThresh );
         },
         /**
-            kweitzel
+         * Fired when either the drag pixel threshold or the mousedown hold
-            doc
+         * time threshold has been met.
          * @method startDrag
          * @param x {int} the X position of the original mousedown
          * @param y {int} the Y position of the original mousedown
          * @static
          */
         startDrag: function(x, y) {
-            kweitzel
+            if (this.dragCurrent && this.dragCurrent.useShim) {
                 this._shimState = this.useShim;
                 this.useShim = true;
+            }
             this._activateShim();
-            doc
+            clearTimeout(this.clickTimeout);
             var dc = this.dragCurrent;
-            kweitzel
+            if (dc && dc.events.b4StartDrag) {
-            doc
+                dc.b4StartDrag(x, y);
-            kweitzel
+                dc.fireEvent('b4StartDragEvent', { x: x, y: y });
             doc
-            kweitzel
+            if (dc && dc.events.startDrag) {
-            doc
+                dc.startDrag(x, y);
-            kweitzel
+                dc.fireEvent('startDragEvent', { x: x, y: y });
             doc
             this.dragThreshMet = true;
         },
         /**
          * Internal function to handle the mouseup event.  Will be invoked
          * from the context of the document.
          * @method handleMouseUp
          * @param {Event} e the event
          * @private
          * @static
          */
         handleMouseUp: function(e) {
             if (this.dragCurrent) {
                 clearTimeout(this.clickTimeout);
                 if (this.dragThreshMet) {
                     if (this.fromTimeout) {
-            kweitzel
+                        this.fromTimeout = false;
-            doc
+                        this.handleMouseMove(e);
+                    }
                     this.fromTimeout = false;
                     this.fireEvents(e, true);
                 } else {
+                }
                 this.stopDrag(e);
                 this.stopEvent(e);
+            }
         },
         /**
          * Utility to stop event propagation and event default, if these
          * features are turned on.
          * @method stopEvent
          * @param {Event} e the event as returned by this.getEvent()
          * @static
          */
         stopEvent: function(e) {
             if (this.stopPropagation) {
                 YAHOO.util.Event.stopPropagation(e);
+            }
             if (this.preventDefault) {
                 YAHOO.util.Event.preventDefault(e);
+            }
         },
         /**
          * Ends the current drag, cleans up the state, and fires the endDrag
          * and mouseUp events.  Called internally when a mouseup is detected
          * during the drag.  Can be fired manually during the drag by passing
          * either another event (such as the mousemove event received in onDrag)
          * or a fake event with pageX and pageY defined (so that endDrag and
          * onMouseUp have usable position data.).  Alternatively, pass true
          * for the silent parameter so that the endDrag and onMouseUp events
          * are skipped (so no event data is needed.)
+         *
          * @method stopDrag
          * @param {Event} e the mouseup event, another event (or a fake event)
          *                  with pageX and pageY defined, or nothing if the
          *                  silent parameter is true
          * @param {boolean} silent skips the enddrag and mouseup events if true
          * @static
          */
         stopDrag: function(e, silent) {
-            kweitzel
+            var dc = this.dragCurrent;
-            doc
+            // Fire the drag end event for the item that was dragged
-            kweitzel
+            if (dc && !silent) {
-            doc
+                if (this.dragThreshMet) {
-            kweitzel
+                    if (dc.events.b4EndDrag) {
                         dc.b4EndDrag(e);
                         dc.fireEvent('b4EndDragEvent', { e: e });
+                    }
                     if (dc.events.endDrag) {
                         dc.endDrag(e);
                         dc.fireEvent('endDragEvent', { e: e });
+                    }
             doc
-            kweitzel
+                if (dc.events.mouseUp) {
                     dc.onMouseUp(e);
                     dc.fireEvent('mouseUpEvent', { e: e });
+                }
+            }
             doc
-            kweitzel
+            if (this._shimActive) {
                 this._deactivateShim();
                 if (this.dragCurrent && this.dragCurrent.useShim) {
                     this.useShim = this._shimState;
                     this._shimState = false;
+                }
             doc
             this.dragCurrent = null;
             this.dragOvers = {};
         },
         /**
          * Internal function to handle the mousemove event.  Will be invoked
          * from the context of the html element.
+         *
          * @TODO figure out what we can do about mouse events lost when the
          * user drags objects beyond the window boundary.  Currently we can
          * detect this in internet explorer by verifying that the mouse is
          * down during the mousemove event.  Firefox doesn't give us the
          * button state on the mousemove event.
          * @method handleMouseMove
          * @param {Event} e the event
          * @private
          * @static
          */
         handleMouseMove: function(e) {
             kweitzel
-            doc
+            var dc = this.dragCurrent;
             if (dc) {
                 // var button = e.which || e.button;
                 // check for IE mouseup outside of page boundary
                 if (YAHOO.util.Event.isIE && !e.button) {
                     this.stopEvent(e);
                     return this.handleMouseUp(e);
-            kweitzel
+                } else {
                     if (e.clientX < 0 || e.clientY < 0) {
                         //This will stop the element from leaving the viewport in FF, Opera & Safari
                         //Not turned on yet
                         //this.stopEvent(e);
                         //return false;
+                    }
             doc
                 if (!this.dragThreshMet) {
                     var diffX = Math.abs(this.startX - YAHOO.util.Event.getPageX(e));
                     var diffY = Math.abs(this.startY - YAHOO.util.Event.getPageY(e));
                     if (diffX > this.clickPixelThresh ||
                                 diffY > this.clickPixelThresh) {
                         this.startDrag(this.startX, this.startY);
+                    }
+                }
                 if (this.dragThreshMet) {
-            kweitzel
+                    if (dc && dc.events.b4Drag) {
                         dc.b4Drag(e);
                         dc.fireEvent('b4DragEvent', { e: e});
+                    }
                     if (dc && dc.events.drag) {
-            doc
+                        dc.onDrag(e);
-            kweitzel
+                        dc.fireEvent('dragEvent', { e: e});
             doc
                     if (dc) {
                         this.fireEvents(e, false);
+                    }
+                }
                 this.stopEvent(e);
+            }
         },
         /**
          * Iterates over all of the DragDrop elements to find ones we are
          * hovering over or dropping on
          * @method fireEvents
          * @param {Event} e the event
          * @param {boolean} isDrop is this a drop op or a mouseover op?
          * @private
          * @static
          */
         fireEvents: function(e, isDrop) {
             var dc = this.dragCurrent;
             // If the user did the mouse up outside of the window, we could
             // get here even though we have ended the drag.
             // If the config option dragOnly is true, bail out and don't fire the events
             if (!dc || dc.isLocked() || dc.dragOnly) {
                 return;
+            }
             var x = YAHOO.util.Event.getPageX(e),
                 y = YAHOO.util.Event.getPageY(e),
                 pt = new YAHOO.util.Point(x,y),
                 pos = dc.getTargetCoord(pt.x, pt.y),
                 el = dc.getDragEl(),
-            kweitzel
+                events = ['out', 'over', 'drop', 'enter'],
-            doc
+                curRegion = new YAHOO.util.Region( pos.y,
                                                pos.x + el.offsetWidth,
                                                pos.y + el.offsetHeight,
                                                pos.x ),
                 oldOvers = [], // cache the previous dragOver array
                 inGroupsObj  = {},
-            kweitzel
+                inGroups  = [],
                 data = {
                     outEvts: [],
                     overEvts: [],
                     dropEvts: [],
                     enterEvts: []
                 };
             doc
             // Check to see if the object(s) we were hovering over is no longer
             // being hovered over so we can fire the onDragOut event
             for (var i in this.dragOvers) {
                 var ddo = this.dragOvers[i];
                 if (! this.isTypeOfDD(ddo)) {
                     continue;
+                }
                 if (! this.isOverTarget(pt, ddo, this.mode, curRegion)) {
-            kweitzel
+                    data.outEvts.push( ddo );
             doc
                 oldOvers[i] = true;
                 delete this.dragOvers[i];
+            }
             for (var sGroup in dc.groups) {
                 if ("string" != typeof sGroup) {
                     continue;
+                }
                 for (i in this.ids[sGroup]) {
                     var oDD = this.ids[sGroup][i];
                     if (! this.isTypeOfDD(oDD)) {
                         continue;
+                    }
                     if (oDD.isTarget && !oDD.isLocked() && oDD != dc) {
                         if (this.isOverTarget(pt, oDD, this.mode, curRegion)) {
                             inGroupsObj[sGroup] = true;
                             // look for drop interactions
                             if (isDrop) {
-            kweitzel
+                                data.dropEvts.push( oDD );
-            doc
+                            // look for drag enter and drag over interactions
                             } else {
                                 // initial drag over: dragEnter fires
                                 if (!oldOvers[oDD.id]) {
-            kweitzel
+                                    data.enterEvts.push( oDD );
-            doc
+                                // subsequent drag overs: dragOver fires
                                 } else {
-            kweitzel
+                                    data.overEvts.push( oDD );
             doc
                                 this.dragOvers[oDD.id] = oDD;
+                            }
+                        }
+                    }
+                }
+            }
             this.interactionInfo = {
-            kweitzel
+                out:       data.outEvts,
                 enter:     data.enterEvts,
                 over:      data.overEvts,
                 drop:      data.dropEvts,
-            doc
+                point:     pt,
                 draggedRegion:    curRegion,
                 sourceRegion: this.locationCache[dc.id],
                 validDrop: isDrop
             };
             for (var inG in inGroupsObj) {
                 inGroups.push(inG);
+            }
             // notify about a drop that did not find a target
-            kweitzel
+            if (isDrop && !data.dropEvts.length) {
-            doc
+                this.interactionInfo.validDrop = false;
-            kweitzel
+                if (dc.events.invalidDrop) {
                     dc.onInvalidDrop(e);
                     dc.fireEvent('invalidDropEvent', { e: e });
+                }
             doc
-            kweitzel
+            for (i = 0; i < events.length; i++) {
                 var tmp = null;
                 if (data[events[i] + 'Evts']) {
                     tmp = data[events[i] + 'Evts'];
             doc
-            kweitzel
+                if (tmp && tmp.length) {
                     var type = events[i].charAt(0).toUpperCase() + events[i].substr(1),
                         ev = 'onDrag' + type,
                         b4 = 'b4Drag' + type,
                         cev = 'drag' + type + 'Event',
                         check = 'drag' + type;
                     if (this.mode) {
                         if (dc.events[b4]) {
                             dc[b4](e, tmp, inGroups);
                             dc.fireEvent(b4 + 'Event', { event: e, info: tmp, group: inGroups });
+                        }
                         if (dc.events[check]) {
                             dc[ev](e, tmp, inGroups);
                             dc.fireEvent(cev, { event: e, info: tmp, group: inGroups });
+                        }
                     } else {
                         for (var b = 0, len = tmp.length; b < len; ++b) {
                             if (dc.events[b4]) {
                                 dc[b4](e, tmp[b].id, inGroups[0]);
                                 dc.fireEvent(b4 + 'Event', { event: e, info: tmp[b].id, group: inGroups[0] });
+                            }
                             if (dc.events[check]) {
                                 dc[ev](e, tmp[b].id, inGroups[0]);
                                 dc.fireEvent(cev, { event: e, info: tmp[b].id, group: inGroups[0] });
+                            }
+                        }
             doc
+                }
+            }
         },
         /**
          * Helper function for getting the best match from the list of drag
          * and drop objects returned by the drag and drop events when we are
          * in INTERSECT mode.  It returns either the first object that the
          * cursor is over, or the object that has the greatest overlap with
          * the dragged element.
          * @method getBestMatch
          * @param  {DragDrop[]} dds The array of drag and drop objects
          * targeted
          * @return {DragDrop}       The best single match
          * @static
          */
         getBestMatch: function(dds) {
             var winner = null;
             var len = dds.length;
             if (len == 1) {
                 winner = dds[0];
             } else {
                 // Loop through the targeted items
                 for (var i=0; i<len; ++i) {
                     var dd = dds[i];
                     // If the cursor is over the object, it wins.  If the
                     // cursor is over multiple matches, the first one we come
                     // to wins.
                     if (this.mode == this.INTERSECT && dd.cursorIsOver) {
                         winner = dd;
                         break;
                     // Otherwise the object with the most overlap wins
                     } else {
                         if (!winner || !winner.overlap || (dd.overlap &&
                             winner.overlap.getArea() < dd.overlap.getArea())) {
                             winner = dd;
+                        }
+                    }
+                }
+            }
             return winner;
         },
         /**
          * Refreshes the cache of the top-left and bottom-right points of the
          * drag and drop objects in the specified group(s).  This is in the
          * format that is stored in the drag and drop instance, so typical
          * usage is:
          * <code>
          * YAHOO.util.DragDropMgr.refreshCache(ddinstance.groups);
          * </code>
          * Alternatively:
          * <code>
          * YAHOO.util.DragDropMgr.refreshCache({group1:true, group2:true});
          * </code>
          * @TODO this really should be an indexed array.  Alternatively this
          * method could accept both.
          * @method refreshCache
          * @param {Object} groups an associative array of groups to refresh
          * @static
          */
         refreshCache: function(groups) {
             // refresh everything if group array is not provided
             var g = groups || this.ids;
             for (var sGroup in g) {
                 if ("string" != typeof sGroup) {
                     continue;
+                }
                 for (var i in this.ids[sGroup]) {
                     var oDD = this.ids[sGroup][i];
                     if (this.isTypeOfDD(oDD)) {
                         var loc = this.getLocation(oDD);
                         if (loc) {
                             this.locationCache[oDD.id] = loc;
                         } else {
                             delete this.locationCache[oDD.id];
+                        }
+                    }
+                }
+            }
         },
         /**
          * This checks to make sure an element exists and is in the DOM.  The
          * main purpose is to handle cases where innerHTML is used to remove
          * drag and drop objects from the DOM.  IE provides an 'unspecified
          * error' when trying to access the offsetParent of such an element
          * @method verifyEl
          * @param {HTMLElement} el the element to check
          * @return {boolean} true if the element looks usable
          * @static
          */
         verifyEl: function(el) {
             try {
                 if (el) {
                     var parent = el.offsetParent;
                     if (parent) {
                         return true;
+                    }
+                }
             } catch(e) {
+            }
             return false;
         },
         /**
          * Returns a Region object containing the drag and drop element's position
          * and size, including the padding configured for it
          * @method getLocation
          * @param {DragDrop} oDD the drag and drop object to get the
          *                       location for
          * @return {YAHOO.util.Region} a Region object representing the total area
          *                             the element occupies, including any padding
          *                             the instance is configured for.
          * @static
          */
         getLocation: function(oDD) {
             if (! this.isTypeOfDD(oDD)) {
                 return null;
+            }
             var el = oDD.getEl(), pos, x1, x2, y1, y2, t, r, b, l;
             try {
                 pos= YAHOO.util.Dom.getXY(el);
             } catch (e) { }
             if (!pos) {
                 return null;
+            }
             x1 = pos[0];
             x2 = x1 + el.offsetWidth;
             y1 = pos[1];
             y2 = y1 + el.offsetHeight;
             t = y1 - oDD.padding[0];
             r = x2 + oDD.padding[1];
             b = y2 + oDD.padding[2];
             l = x1 - oDD.padding[3];
             return new YAHOO.util.Region( t, r, b, l );
         },
         /**
          * Checks the cursor location to see if it over the target
          * @method isOverTarget
          * @param {YAHOO.util.Point} pt The point to evaluate
          * @param {DragDrop} oTarget the DragDrop object we are inspecting
          * @param {boolean} intersect true if we are in intersect mode
          * @param {YAHOO.util.Region} pre-cached location of the dragged element
          * @return {boolean} true if the mouse is over the target
          * @private
          * @static
          */
         isOverTarget: function(pt, oTarget, intersect, curRegion) {
             // use cache if available
             var loc = this.locationCache[oTarget.id];
             if (!loc || !this.useCache) {
                 loc = this.getLocation(oTarget);
                 this.locationCache[oTarget.id] = loc;
+            }
             if (!loc) {
                 return false;
+            }
             oTarget.cursorIsOver = loc.contains( pt );
             // DragDrop is using this as a sanity check for the initial mousedown
             // in this case we are done.  In POINT mode, if the drag obj has no
             // contraints, we are done. Otherwise we need to evaluate the
             // region the target as occupies to determine if the dragged element
             // overlaps with it.
             var dc = this.dragCurrent;
             if (!dc || (!intersect && !dc.constrainX && !dc.constrainY)) {
                 //if (oTarget.cursorIsOver) {
                 //}
                 return oTarget.cursorIsOver;
+            }
             oTarget.overlap = null;
             kweitzel
-            doc
+            // Get the current location of the drag element, this is the
             // location of the mouse event less the delta that represents
             // where the original mousedown happened on the element.  We
             // need to consider constraints and ticks as well.
             if (!curRegion) {
                 var pos = dc.getTargetCoord(pt.x, pt.y);
                 var el = dc.getDragEl();
                 curRegion = new YAHOO.util.Region( pos.y,
                                                    pos.x + el.offsetWidth,
                                                    pos.y + el.offsetHeight,
                                                    pos.x );
+            }
             var overlap = curRegion.intersect(loc);
             if (overlap) {
                 oTarget.overlap = overlap;
                 return (intersect) ? true : oTarget.cursorIsOver;
             } else {
                 return false;
+            }
         },
         /**
          * unload event handler
          * @method _onUnload
          * @private
          * @static
          */
         _onUnload: function(e, me) {
             this.unregAll();
         },
         /**
          * Cleans up the drag and drop events and objects.
          * @method unregAll
          * @private
          * @static
          */
         unregAll: function() {
             if (this.dragCurrent) {
                 this.stopDrag();
                 this.dragCurrent = null;
+            }
             this._execOnAll("unreg", []);
             //for (var i in this.elementCache) {
                 //delete this.elementCache[i];
             //}
             //this.elementCache = {};
             this.ids = {};
         },
         /**
          * A cache of DOM elements
          * @property elementCache
          * @private
          * @static
          * @deprecated elements are not cached now
          */
         elementCache: {},
         /**
          * Get the wrapper for the DOM element specified
          * @method getElWrapper
          * @param {String} id the id of the element to get
          * @return {YAHOO.util.DDM.ElementWrapper} the wrapped element
          * @private
          * @deprecated This wrapper isn't that useful
          * @static
          */
         getElWrapper: function(id) {
             var oWrapper = this.elementCache[id];
             if (!oWrapper || !oWrapper.el) {
                 oWrapper = this.elementCache[id] =
                     new this.ElementWrapper(YAHOO.util.Dom.get(id));
+            }
             return oWrapper;
         },
         /**
          * Returns the actual DOM element
          * @method getElement
          * @param {String} id the id of the elment to get
          * @return {Object} The element
          * @deprecated use YAHOO.util.Dom.get instead
          * @static
          */
         getElement: function(id) {
             return YAHOO.util.Dom.get(id);
         },
         /**
          * Returns the style property for the DOM element (i.e.,
          * document.getElById(id).style)
          * @method getCss
          * @param {String} id the id of the elment to get
          * @return {Object} The style property of the element
          * @deprecated use YAHOO.util.Dom instead
          * @static
          */
         getCss: function(id) {
             var el = YAHOO.util.Dom.get(id);
             return (el) ? el.style : null;
         },
         /**
          * Inner class for cached elements
          * @class DragDropMgr.ElementWrapper
          * @for DragDropMgr
          * @private
          * @deprecated
          */
         ElementWrapper: function(el) {
                 /**
                  * The element
                  * @property el
                  */
                 this.el = el || null;
                 /**
                  * The element id
                  * @property id
                  */
                 this.id = this.el && el.id;
                 /**
                  * A reference to the style property
                  * @property css
                  */
                 this.css = this.el && el.style;
             },
         /**
          * Returns the X position of an html element
          * @method getPosX
          * @param el the element for which to get the position
          * @return {int} the X coordinate
          * @for DragDropMgr
          * @deprecated use YAHOO.util.Dom.getX instead
          * @static
          */
         getPosX: function(el) {
             return YAHOO.util.Dom.getX(el);
         },
         /**
          * Returns the Y position of an html element
          * @method getPosY
          * @param el the element for which to get the position
          * @return {int} the Y coordinate
          * @deprecated use YAHOO.util.Dom.getY instead
          * @static
          */
         getPosY: function(el) {
             return YAHOO.util.Dom.getY(el);
         },
         /**
          * Swap two nodes.  In IE, we use the native method, for others we
          * emulate the IE behavior
          * @method swapNode
          * @param n1 the first node to swap
          * @param n2 the other node to swap
          * @static
          */
         swapNode: function(n1, n2) {
             if (n1.swapNode) {
                 n1.swapNode(n2);
             } else {
                 var p = n2.parentNode;
                 var s = n2.nextSibling;
                 if (s == n1) {
                     p.insertBefore(n1, n2);
                 } else if (n2 == n1.nextSibling) {
                     p.insertBefore(n2, n1);
                 } else {
                     n1.parentNode.replaceChild(n2, n1);
                     p.insertBefore(n1, s);
+                }
+            }
         },
         /**
          * Returns the current scroll position
          * @method getScroll
          * @private
          * @static
          */
         getScroll: function () {
             var t, l, dde=document.documentElement, db=document.body;
             if (dde && (dde.scrollTop || dde.scrollLeft)) {
                 t = dde.scrollTop;
                 l = dde.scrollLeft;
             } else if (db) {
                 t = db.scrollTop;
                 l = db.scrollLeft;
             } else {
+            }
             return { top: t, left: l };
         },
         /**
          * Returns the specified element style property
          * @method getStyle
          * @param {HTMLElement} el          the element
          * @param {string}      styleProp   the style property
          * @return {string} The value of the style property
          * @deprecated use YAHOO.util.Dom.getStyle
          * @static
          */
         getStyle: function(el, styleProp) {
             return YAHOO.util.Dom.getStyle(el, styleProp);
         },
         /**
          * Gets the scrollTop
          * @method getScrollTop
          * @return {int} the document's scrollTop
          * @static
          */
         getScrollTop: function () { return this.getScroll().top; },
         /**
          * Gets the scrollLeft
          * @method getScrollLeft
          * @return {int} the document's scrollTop
          * @static
          */
         getScrollLeft: function () { return this.getScroll().left; },
         /**
          * Sets the x/y position of an element to the location of the
          * target element.
          * @method moveToEl
          * @param {HTMLElement} moveEl      The element to move
          * @param {HTMLElement} targetEl    The position reference element
          * @static
          */
         moveToEl: function (moveEl, targetEl) {
             var aCoord = YAHOO.util.Dom.getXY(targetEl);
             YAHOO.util.Dom.setXY(moveEl, aCoord);
         },
         /**
          * Gets the client height
          * @method getClientHeight
          * @return {int} client height in px
          * @deprecated use YAHOO.util.Dom.getViewportHeight instead
          * @static
          */
         getClientHeight: function() {
             return YAHOO.util.Dom.getViewportHeight();
         },
         /**
          * Gets the client width
          * @method getClientWidth
          * @return {int} client width in px
          * @deprecated use YAHOO.util.Dom.getViewportWidth instead
          * @static
          */
         getClientWidth: function() {
             return YAHOO.util.Dom.getViewportWidth();
         },
         /**
          * Numeric array sort function
          * @method numericSort
          * @static
          */
         numericSort: function(a, b) { return (a - b); },
         /**
          * Internal counter
          * @property _timeoutCount
          * @private
          * @static
          */
         _timeoutCount: 0,
         /**
          * Trying to make the load order less important.  Without this we get
          * an error if this file is loaded before the Event Utility.
          * @method _addListeners
          * @private
          * @static
          */
         _addListeners: function() {
             var DDM = YAHOO.util.DDM;
             if ( YAHOO.util.Event && document ) {
                 DDM._onLoad();
             } else {
                 if (DDM._timeoutCount > 2000) {
                 } else {
                     setTimeout(DDM._addListeners, 10);
                     if (document && document.body) {
                         DDM._timeoutCount += 1;
+                    }
+                }
+            }
         },
         /**
          * Recursively searches the immediate parent and all child nodes for
          * the handle element in order to determine wheter or not it was
          * clicked.
          * @method handleWasClicked
          * @param node the html element to inspect
          * @static
          */
         handleWasClicked: function(node, id) {
             if (this.isHandle(id, node.id)) {
                 return true;
             } else {
                 // check to see if this is a text node child of the one we want
                 var p = node.parentNode;
                 while (p) {
                     if (this.isHandle(id, p.id)) {
                         return true;
                     } else {
                         p = p.parentNode;
+                    }
+                }
+            }
             return false;
+        }
     };
 }();
 // shorter alias, save a few bytes
 YAHOO.util.DDM = YAHOO.util.DragDropMgr;
 YAHOO.util.DDM._addListeners();
+}
 (function() {
 var Event=YAHOO.util.Event;
 var Dom=YAHOO.util.Dom;
 /**
  * Defines the interface and base operation of items that that can be
  * dragged or can be drop targets.  It was designed to be extended, overriding
  * the event handlers for startDrag, onDrag, onDragOver, onDragOut.
  * Up to three html elements can be associated with a DragDrop instance:
  * <ul>
  * <li>linked element: the element that is passed into the constructor.
  * This is the element which defines the boundaries for interaction with
  * other DragDrop objects.</li>
  * <li>handle element(s): The drag operation only occurs if the element that
  * was clicked matches a handle element.  By default this is the linked
  * element, but there are times that you will want only a portion of the
  * linked element to initiate the drag operation, and the setHandleElId()
  * method provides a way to define this.</li>
  * <li>drag element: this represents an the element that would be moved along
  * with the cursor during a drag operation.  By default, this is the linked
  * element itself as in {@link YAHOO.util.DD}.  setDragElId() lets you define
  * a separate element that would be moved, as in {@link YAHOO.util.DDProxy}
  * </li>
  * </ul>
  * This class should not be instantiated until the onload event to ensure that
  * the associated elements are available.
  * The following would define a DragDrop obj that would interact with any
  * other DragDrop obj in the "group1" group:
  * <pre>
  *  dd = new YAHOO.util.DragDrop("div1", "group1");
  * </pre>
  * Since none of the event handlers have been implemented, nothing would
  * actually happen if you were to run the code above.  Normally you would
  * override this class or one of the default implementations, but you can
  * also override the methods you want on an instance of the class...
  * <pre>
  *  dd.onDragDrop = function(e, id) {
  *  &nbsp;&nbsp;alert("dd was dropped on " + id);
  *  }
  * </pre>
  * @namespace YAHOO.util
  * @class DragDrop
  * @constructor
  * @param {String} id of the element that is linked to this instance
  * @param {String} sGroup the group of related DragDrop objects
  * @param {object} config an object containing configurable attributes
  *                Valid properties for DragDrop:
  *                    padding, isTarget, maintainOffset, primaryButtonOnly,
  */
 YAHOO.util.DragDrop = function(id, sGroup, config) {
     if (id) {
         this.init(id, sGroup, config);
+    }
 };
 YAHOO.util.DragDrop.prototype = {
     /**
-            kweitzel
+     * An Object Literal containing the events that we will be using: mouseDown, b4MouseDown, mouseUp, b4StartDrag, startDrag, b4EndDrag, endDrag, mouseUp, drag, b4Drag, invalidDrop, b4DragOut, dragOut, dragEnter, b4DragOver, dragOver, b4DragDrop, dragDrop
      * By setting any of these to false, then event will not be fired.
      * @property events
      * @type object
      */
     events: null,
     /**
     * @method on
     * @description Shortcut for EventProvider.subscribe, see <a href="YAHOO.util.EventProvider.html#subscribe">YAHOO.util.EventProvider.subscribe</a>
     */
     on: function() {
         this.subscribe.apply(this, arguments);
     },
     /**
-            doc
+     * The id of the element associated with this object.  This is what we
      * refer to as the "linked element" because the size and position of
      * this element is used to determine when the drag and drop objects have
      * interacted.
      * @property id
      * @type String
      */
     id: null,
     /**
      * Configuration attributes passed into the constructor
      * @property config
      * @type object
      */
     config: null,
     /**
      * The id of the element that will be dragged.  By default this is same
      * as the linked element , but could be changed to another element. Ex:
      * YAHOO.util.DDProxy
      * @property dragElId
      * @type String
      * @private
      */
     dragElId: null,
     /**
      * the id of the element that initiates the drag operation.  By default
      * this is the linked element, but could be changed to be a child of this
      * element.  This lets us do things like only starting the drag when the
      * header element within the linked html element is clicked.
      * @property handleElId
      * @type String
      * @private
      */
     handleElId: null,
     /**
      * An associative array of HTML tags that will be ignored if clicked.
      * @property invalidHandleTypes
      * @type {string: string}
      */
     invalidHandleTypes: null,
     /**
      * An associative array of ids for elements that will be ignored if clicked
      * @property invalidHandleIds
      * @type {string: string}
      */
     invalidHandleIds: null,
     /**
      * An indexted array of css class names for elements that will be ignored
      * if clicked.
      * @property invalidHandleClasses
      * @type string[]
      */
     invalidHandleClasses: null,
     /**
      * The linked element's absolute X position at the time the drag was
      * started
      * @property startPageX
      * @type int
      * @private
      */
     startPageX: 0,
     /**
      * The linked element's absolute X position at the time the drag was
      * started
      * @property startPageY
      * @type int
      * @private
      */
     startPageY: 0,
     /**
      * The group defines a logical collection of DragDrop objects that are
      * related.  Instances only get events when interacting with other
      * DragDrop object in the same group.  This lets us define multiple
      * groups using a single DragDrop subclass if we want.
      * @property groups
      * @type {string: string}
      */
     groups: null,
     /**
      * Individual drag/drop instances can be locked.  This will prevent
      * onmousedown start drag.
      * @property locked
      * @type boolean
      * @private
      */
     locked: false,
     /**
      * Lock this instance
      * @method lock
      */
     lock: function() { this.locked = true; },
     /**
      * Unlock this instace
      * @method unlock
      */
     unlock: function() { this.locked = false; },
     /**
      * By default, all instances can be a drop target.  This can be disabled by
      * setting isTarget to false.
      * @property isTarget
      * @type boolean
      */
     isTarget: true,
     /**
      * The padding configured for this drag and drop object for calculating
      * the drop zone intersection with this object.
      * @property padding
      * @type int[]
      */
     padding: null,
     /**
      * If this flag is true, do not fire drop events. The element is a drag only element (for movement not dropping)
      * @property dragOnly
      * @type Boolean
      */
     dragOnly: false,
     /**
-            kweitzel
+     * If this flag is true, a shim will be placed over the screen/viewable area to track mouse events. Should help with dragging elements over iframes and other controls.
      * @property useShim
      * @type Boolean
      */
     useShim: false,
     /**
-            doc
+     * Cached reference to the linked element
      * @property _domRef
      * @private
      */
     _domRef: null,
     /**
      * Internal typeof flag
      * @property __ygDragDrop
      * @private
      */
     __ygDragDrop: true,
     /**
      * Set to true when horizontal contraints are applied
      * @property constrainX
      * @type boolean
      * @private
      */
     constrainX: false,
     /**
      * Set to true when vertical contraints are applied
      * @property constrainY
      * @type boolean
      * @private
      */
     constrainY: false,
     /**
      * The left constraint
      * @property minX
      * @type int
      * @private
      */
     minX: 0,
     /**
      * The right constraint
      * @property maxX
      * @type int
      * @private
      */
     maxX: 0,
     /**
      * The up constraint
      * @property minY
      * @type int
      * @type int
      * @private
      */
     minY: 0,
     /**
      * The down constraint
      * @property maxY
      * @type int
      * @private
      */
     maxY: 0,
     /**
      * The difference between the click position and the source element's location
      * @property deltaX
      * @type int
      * @private
      */
     deltaX: 0,
     /**
      * The difference between the click position and the source element's location
      * @property deltaY
      * @type int
      * @private
      */
     deltaY: 0,
     /**
      * Maintain offsets when we resetconstraints.  Set to true when you want
      * the position of the element relative to its parent to stay the same
      * when the page changes
+     *
      * @property maintainOffset
      * @type boolean
      */
     maintainOffset: false,
     /**
      * Array of pixel locations the element will snap to if we specified a
      * horizontal graduation/interval.  This array is generated automatically
      * when you define a tick interval.
      * @property xTicks
      * @type int[]
      */
     xTicks: null,
     /**
      * Array of pixel locations the element will snap to if we specified a
      * vertical graduation/interval.  This array is generated automatically
      * when you define a tick interval.
      * @property yTicks
      * @type int[]
      */
     yTicks: null,
     /**
      * By default the drag and drop instance will only respond to the primary
      * button click (left button for a right-handed mouse).  Set to true to
      * allow drag and drop to start with any mouse click that is propogated
      * by the browser
      * @property primaryButtonOnly
      * @type boolean
      */
     primaryButtonOnly: true,
     /**
      * The availabe property is false until the linked dom element is accessible.
      * @property available
      * @type boolean
      */
     available: false,
     /**
      * By default, drags can only be initiated if the mousedown occurs in the
      * region the linked element is.  This is done in part to work around a
      * bug in some browsers that mis-report the mousedown if the previous
      * mouseup happened outside of the window.  This property is set to true
      * if outer handles are defined.
+     *
      * @property hasOuterHandles
      * @type boolean
      * @default false
      */
     hasOuterHandles: false,
     /**
      * Property that is assigned to a drag and drop object when testing to
      * see if it is being targeted by another dd object.  This property
      * can be used in intersect mode to help determine the focus of
      * the mouse interaction.  DDM.getBestMatch uses this property first to
      * determine the closest match in INTERSECT mode when multiple targets
      * are part of the same interaction.
      * @property cursorIsOver
      * @type boolean
      */
     cursorIsOver: false,
     /**
      * Property that is assigned to a drag and drop object when testing to
      * see if it is being targeted by another dd object.  This is a region
      * that represents the area the draggable element overlaps this target.
      * DDM.getBestMatch uses this property to compare the size of the overlap
      * to that of other targets in order to determine the closest match in
      * INTERSECT mode when multiple targets are part of the same interaction.
      * @property overlap
      * @type YAHOO.util.Region
      */
     overlap: null,
     /**
      * Code that executes immediately before the startDrag event
      * @method b4StartDrag
      * @private
      */
     b4StartDrag: function(x, y) { },
     /**
      * Abstract method called after a drag/drop object is clicked
      * and the drag or mousedown time thresholds have beeen met.
      * @method startDrag
      * @param {int} X click location
      * @param {int} Y click location
      */
     startDrag: function(x, y) { /* override this */ },
     /**
      * Code that executes immediately before the onDrag event
      * @method b4Drag
      * @private
      */
     b4Drag: function(e) { },
     /**
      * Abstract method called during the onMouseMove event while dragging an
      * object.
      * @method onDrag
      * @param {Event} e the mousemove event
      */
     onDrag: function(e) { /* override this */ },
     /**
      * Abstract method called when this element fist begins hovering over
      * another DragDrop obj
      * @method onDragEnter
      * @param {Event} e the mousemove event
      * @param {String|DragDrop[]} id In POINT mode, the element
      * id this is hovering over.  In INTERSECT mode, an array of one or more
      * dragdrop items being hovered over.
      */
     onDragEnter: function(e, id) { /* override this */ },
     /**
      * Code that executes immediately before the onDragOver event
      * @method b4DragOver
      * @private
      */
     b4DragOver: function(e) { },
     /**
      * Abstract method called when this element is hovering over another
      * DragDrop obj
      * @method onDragOver
      * @param {Event} e the mousemove event
      * @param {String|DragDrop[]} id In POINT mode, the element
      * id this is hovering over.  In INTERSECT mode, an array of dd items
      * being hovered over.
      */
     onDragOver: function(e, id) { /* override this */ },
     /**
      * Code that executes immediately before the onDragOut event
      * @method b4DragOut
      * @private
      */
     b4DragOut: function(e) { },
     /**
      * Abstract method called when we are no longer hovering over an element
      * @method onDragOut
      * @param {Event} e the mousemove event
      * @param {String|DragDrop[]} id In POINT mode, the element
      * id this was hovering over.  In INTERSECT mode, an array of dd items
      * that the mouse is no longer over.
      */
     onDragOut: function(e, id) { /* override this */ },
     /**
      * Code that executes immediately before the onDragDrop event
      * @method b4DragDrop
      * @private
      */
     b4DragDrop: function(e) { },
     /**
      * Abstract method called when this item is dropped on another DragDrop
      * obj
      * @method onDragDrop
      * @param {Event} e the mouseup event
      * @param {String|DragDrop[]} id In POINT mode, the element
      * id this was dropped on.  In INTERSECT mode, an array of dd items this
      * was dropped on.
      */
     onDragDrop: function(e, id) { /* override this */ },
     /**
      * Abstract method called when this item is dropped on an area with no
      * drop target
      * @method onInvalidDrop
      * @param {Event} e the mouseup event
      */
     onInvalidDrop: function(e) { /* override this */ },
     /**
      * Code that executes immediately before the endDrag event
      * @method b4EndDrag
      * @private
      */
     b4EndDrag: function(e) { },
     /**
      * Fired when we are done dragging the object
      * @method endDrag
      * @param {Event} e the mouseup event
      */
     endDrag: function(e) { /* override this */ },
     /**
      * Code executed immediately before the onMouseDown event
      * @method b4MouseDown
      * @param {Event} e the mousedown event
      * @private
      */
     b4MouseDown: function(e) {  },
     /**
      * Event handler that fires when a drag/drop obj gets a mousedown
      * @method onMouseDown
      * @param {Event} e the mousedown event
      */
     onMouseDown: function(e) { /* override this */ },
     /**
      * Event handler that fires when a drag/drop obj gets a mouseup
      * @method onMouseUp
      * @param {Event} e the mouseup event
      */
     onMouseUp: function(e) { /* override this */ },
     /**
      * Override the onAvailable method to do what is needed after the initial
      * position was determined.
      * @method onAvailable
      */
     onAvailable: function () {
     },
     /**
      * Returns a reference to the linked element
      * @method getEl
      * @return {HTMLElement} the html element
      */
     getEl: function() {
         if (!this._domRef) {
             this._domRef = Dom.get(this.id);
+        }
         return this._domRef;
     },
     /**
      * Returns a reference to the actual element to drag.  By default this is
      * the same as the html element, but it can be assigned to another
      * element. An example of this can be found in YAHOO.util.DDProxy
      * @method getDragEl
      * @return {HTMLElement} the html element
      */
     getDragEl: function() {
         return Dom.get(this.dragElId);
     },
     /**
      * Sets up the DragDrop object.  Must be called in the constructor of any
      * YAHOO.util.DragDrop subclass
      * @method init
      * @param id the id of the linked element
      * @param {String} sGroup the group of related items
      * @param {object} config configuration attributes
      */
     init: function(id, sGroup, config) {
         this.initTarget(id, sGroup, config);
         Event.on(this._domRef || this.id, "mousedown",
                         this.handleMouseDown, this, true);
             kweitzel
-            doc
+        // Event.on(this.id, "selectstart", Event.preventDefault);
-            kweitzel
+        for (var i in this.events) {
             this.createEvent(i + 'Event');
+        }
-            doc
+    },
     /**
      * Initializes Targeting functionality only... the object does not
      * get a mousedown handler.
      * @method initTarget
      * @param id the id of the linked element
      * @param {String} sGroup the group of related items
      * @param {object} config configuration attributes
      */
     initTarget: function(id, sGroup, config) {
         // configuration attributes
         this.config = config || {};
-            kweitzel
+        this.events = {};
-            doc
+        // create a local reference to the drag and drop manager
         this.DDM = YAHOO.util.DDM;
         // initialize the groups object
         this.groups = {};
         // assume that we have an element reference instead of an id if the
         // parameter is not a string
         if (typeof id !== "string") {
             this._domRef = id;
             id = Dom.generateId(id);
+        }
         // set the id
         this.id = id;
         // add to an interaction group
         this.addToGroup((sGroup) ? sGroup : "default");
         // We don't want to register this as the handle with the manager
         // so we just set the id rather than calling the setter.
         this.handleElId = id;
         Event.onAvailable(id, this.handleOnAvailable, this, true);
         // the linked element is the element that gets dragged by default
         this.setDragElId(id);
         // by default, clicked anchors will not start drag operations.
         // @TODO what else should be here?  Probably form fields.
         this.invalidHandleTypes = { A: "A" };
         this.invalidHandleIds = {};
         this.invalidHandleClasses = [];
         this.applyConfig();
     },
     /**
      * Applies the configuration parameters that were passed into the constructor.
      * This is supposed to happen at each level through the inheritance chain.  So
      * a DDProxy implentation will execute apply config on DDProxy, DD, and
      * DragDrop in order to get all of the parameters that are available in
      * each object.
      * @method applyConfig
      */
     applyConfig: function() {
-            kweitzel
+        this.events = {
             mouseDown: true,
             b4MouseDown: true,
             mouseUp: true,
             b4StartDrag: true,
             startDrag: true,
             b4EndDrag: true,
             endDrag: true,
             drag: true,
             b4Drag: true,
             invalidDrop: true,
             b4DragOut: true,
             dragOut: true,
             dragEnter: true,
             b4DragOver: true,
             dragOver: true,
             b4DragDrop: true,
             dragDrop: true
         };
         if (this.config.events) {
             for (var i in this.config.events) {
                 if (this.config.events[i] === false) {
                     this.events[i] = false;
+                }
+            }
+        }
             doc
             kweitzel
-            doc
+        // configurable properties:
         //    padding, isTarget, maintainOffset, primaryButtonOnly
         this.padding           = this.config.padding || [0, 0, 0, 0];
         this.isTarget          = (this.config.isTarget !== false);
         this.maintainOffset    = (this.config.maintainOffset);
         this.primaryButtonOnly = (this.config.primaryButtonOnly !== false);
         this.dragOnly = ((this.config.dragOnly === true) ? true : false);
-            kweitzel
+        this.useShim = ((this.config.useShim === true) ? true : false);
-            doc
+    },
     /**
      * Executed when the linked element is available
      * @method handleOnAvailable
      * @private
      */
     handleOnAvailable: function() {
         this.available = true;
         this.resetConstraints();
         this.onAvailable();
     },
      /**
      * Configures the padding for the target zone in px.  Effectively expands
      * (or reduces) the virtual object size for targeting calculations.
      * Supports css-style shorthand; if only one parameter is passed, all sides
      * will have that padding, and if only two are passed, the top and bottom
      * will have the first param, the left and right the second.
      * @method setPadding
      * @param {int} iTop    Top pad
      * @param {int} iRight  Right pad
      * @param {int} iBot    Bot pad
      * @param {int} iLeft   Left pad
      */
     setPadding: function(iTop, iRight, iBot, iLeft) {
         // this.padding = [iLeft, iRight, iTop, iBot];
         if (!iRight && 0 !== iRight) {
             this.padding = [iTop, iTop, iTop, iTop];
         } else if (!iBot && 0 !== iBot) {
             this.padding = [iTop, iRight, iTop, iRight];
         } else {
             this.padding = [iTop, iRight, iBot, iLeft];
+        }
     },
     /**
      * Stores the initial placement of the linked element.
      * @method setInitialPosition
      * @param {int} diffX   the X offset, default 0
      * @param {int} diffY   the Y offset, default 0
      * @private
      */
     setInitPosition: function(diffX, diffY) {
         var el = this.getEl();
         if (!this.DDM.verifyEl(el)) {
-            kweitzel
+            if (el && el.style && (el.style.display == 'none')) {
             } else {
+            }
-            doc
+            return;
+        }
         var dx = diffX || 0;
         var dy = diffY || 0;
         var p = Dom.getXY( el );
         this.initPageX = p[0] - dx;
         this.initPageY = p[1] - dy;
         this.lastPageX = p[0];
         this.lastPageY = p[1];
         this.setStartPosition(p);
     },
     /**
      * Sets the start position of the element.  This is set when the obj
      * is initialized, the reset when a drag is started.
      * @method setStartPosition
      * @param pos current position (from previous lookup)
      * @private
      */
     setStartPosition: function(pos) {
         var p = pos || Dom.getXY(this.getEl());
         this.deltaSetXY = null;
         this.startPageX = p[0];
         this.startPageY = p[1];
     },
     /**
      * Add this instance to a group of related drag/drop objects.  All
      * instances belong to at least one group, and can belong to as many
      * groups as needed.
      * @method addToGroup
      * @param sGroup {string} the name of the group
      */
     addToGroup: function(sGroup) {
         this.groups[sGroup] = true;
         this.DDM.regDragDrop(this, sGroup);
     },
     /**
      * Remove's this instance from the supplied interaction group
      * @method removeFromGroup
      * @param {string}  sGroup  The group to drop
      */
     removeFromGroup: function(sGroup) {
         if (this.groups[sGroup]) {
             delete this.groups[sGroup];
+        }
         this.DDM.removeDDFromGroup(this, sGroup);
     },
     /**
      * Allows you to specify that an element other than the linked element
      * will be moved with the cursor during a drag
      * @method setDragElId
      * @param id {string} the id of the element that will be used to initiate the drag
      */
     setDragElId: function(id) {
         this.dragElId = id;
     },
     /**
      * Allows you to specify a child of the linked element that should be
      * used to initiate the drag operation.  An example of this would be if
      * you have a content div with text and links.  Clicking anywhere in the
      * content area would normally start the drag operation.  Use this method
      * to specify that an element inside of the content div is the element
      * that starts the drag operation.
      * @method setHandleElId
      * @param id {string} the id of the element that will be used to
      * initiate the drag.
      */
     setHandleElId: function(id) {
         if (typeof id !== "string") {
             id = Dom.generateId(id);
+        }
         this.handleElId = id;
         this.DDM.regHandle(this.id, id);
     },
     /**
      * Allows you to set an element outside of the linked element as a drag
      * handle
      * @method setOuterHandleElId
      * @param id the id of the element that will be used to initiate the drag
      */
     setOuterHandleElId: function(id) {
         if (typeof id !== "string") {
             id = Dom.generateId(id);
+        }
         Event.on(id, "mousedown",
                 this.handleMouseDown, this, true);
         this.setHandleElId(id);
         this.hasOuterHandles = true;
     },
     /**
      * Remove all drag and drop hooks for this element
      * @method unreg
      */
     unreg: function() {
         Event.removeListener(this.id, "mousedown",
                 this.handleMouseDown);
         this._domRef = null;
         this.DDM._remove(this);
     },
     /**
      * Returns true if this instance is locked, or the drag drop mgr is locked
      * (meaning that all drag/drop is disabled on the page.)
      * @method isLocked
      * @return {boolean} true if this obj or all drag/drop is locked, else
      * false
      */
     isLocked: function() {
         return (this.DDM.isLocked() || this.locked);
     },
     /**
      * Fired when this object is clicked
      * @method handleMouseDown
      * @param {Event} e
      * @param {YAHOO.util.DragDrop} oDD the clicked dd object (this dd obj)
      * @private
      */
     handleMouseDown: function(e, oDD) {
         var button = e.which || e.button;
         if (this.primaryButtonOnly && button > 1) {
             return;
+        }
         if (this.isLocked()) {
             return;
+        }
         // firing the mousedown events prior to calculating positions
-            kweitzel
+        var b4Return = this.b4MouseDown(e),
         b4Return2 = true;
             doc
-            kweitzel
+        if (this.events.b4MouseDown) {
             b4Return2 = this.fireEvent('b4MouseDownEvent', e);
+        }
         var mDownReturn = this.onMouseDown(e),
             mDownReturn2 = true;
         if (this.events.mouseDown) {
             mDownReturn2 = this.fireEvent('mouseDownEvent', e);
+        }
         if ((b4Return === false) || (mDownReturn === false) || (b4Return2 === false) || (mDownReturn2 === false)) {
-            doc
+            return;
+        }
         this.DDM.refreshCache(this.groups);
         // var self = this;
         // setTimeout( function() { self.DDM.refreshCache(self.groups); }, 0);
         // Only process the event if we really clicked within the linked
         // element.  The reason we make this check is that in the case that
         // another element was moved between the clicked element and the
         // cursor in the time between the mousedown and mouseup events. When
         // this happens, the element gets the next mousedown event
         // regardless of where on the screen it happened.
         var pt = new YAHOO.util.Point(Event.getPageX(e), Event.getPageY(e));
         if (!this.hasOuterHandles && !this.DDM.isOverTarget(pt, this) )  {
         } else {
             if (this.clickValidator(e)) {
                 // set the initial element position
                 this.setStartPosition();
                 // start tracking mousemove distance and mousedown time to
                 // determine when to start the actual drag
                 this.DDM.handleMouseDown(e, this);
                 // this mousedown is mine
                 this.DDM.stopEvent(e);
             } else {
+            }
+        }
     },
     /**
      * @method clickValidator
      * @description Method validates that the clicked element
      * was indeed the handle or a valid child of the handle
      * @param {Event} e
      */
     clickValidator: function(e) {
-            kweitzel
+        var target = YAHOO.util.Event.getTarget(e);
-            doc
+        return ( this.isValidHandleChild(target) &&
                     (this.id == this.handleElId ||
                         this.DDM.handleWasClicked(target, this.id)) );
     },
     /**
      * Finds the location the element should be placed if we want to move
      * it to where the mouse location less the click offset would place us.
      * @method getTargetCoord
      * @param {int} iPageX the X coordinate of the click
      * @param {int} iPageY the Y coordinate of the click
      * @return an object that contains the coordinates (Object.x and Object.y)
      * @private
      */
     getTargetCoord: function(iPageX, iPageY) {
         var x = iPageX - this.deltaX;
         var y = iPageY - this.deltaY;
         if (this.constrainX) {
             if (x < this.minX) { x = this.minX; }
             if (x > this.maxX) { x = this.maxX; }
+        }
         if (this.constrainY) {
             if (y < this.minY) { y = this.minY; }
             if (y > this.maxY) { y = this.maxY; }
+        }
         x = this.getTick(x, this.xTicks);
         y = this.getTick(y, this.yTicks);
         return {x:x, y:y};
     },
     /**
      * Allows you to specify a tag name that should not start a drag operation
      * when clicked.  This is designed to facilitate embedding links within a
      * drag handle that do something other than start the drag.
      * @method addInvalidHandleType
      * @param {string} tagName the type of element to exclude
      */
     addInvalidHandleType: function(tagName) {
         var type = tagName.toUpperCase();
         this.invalidHandleTypes[type] = type;
     },
     /**
      * Lets you to specify an element id for a child of a drag handle
      * that should not initiate a drag
      * @method addInvalidHandleId
      * @param {string} id the element id of the element you wish to ignore
      */
     addInvalidHandleId: function(id) {
         if (typeof id !== "string") {
             id = Dom.generateId(id);
+        }
         this.invalidHandleIds[id] = id;
     },
     /**
      * Lets you specify a css class of elements that will not initiate a drag
      * @method addInvalidHandleClass
      * @param {string} cssClass the class of the elements you wish to ignore
      */
     addInvalidHandleClass: function(cssClass) {
         this.invalidHandleClasses.push(cssClass);
     },
     /**
      * Unsets an excluded tag name set by addInvalidHandleType
      * @method removeInvalidHandleType
      * @param {string} tagName the type of element to unexclude
      */
     removeInvalidHandleType: function(tagName) {
         var type = tagName.toUpperCase();
         // this.invalidHandleTypes[type] = null;
         delete this.invalidHandleTypes[type];
     },
     /**
      * Unsets an invalid handle id
      * @method removeInvalidHandleId
      * @param {string} id the id of the element to re-enable
      */
     removeInvalidHandleId: function(id) {
         if (typeof id !== "string") {
             id = Dom.generateId(id);
+        }
         delete this.invalidHandleIds[id];
     },
     /**
      * Unsets an invalid css class
      * @method removeInvalidHandleClass
      * @param {string} cssClass the class of the element(s) you wish to
      * re-enable
      */
     removeInvalidHandleClass: function(cssClass) {
         for (var i=0, len=this.invalidHandleClasses.length; i<len; ++i) {
             if (this.invalidHandleClasses[i] == cssClass) {
                 delete this.invalidHandleClasses[i];
+            }
+        }
     },
     /**
      * Checks the tag exclusion list to see if this click should be ignored
      * @method isValidHandleChild
      * @param {HTMLElement} node the HTMLElement to evaluate
      * @return {boolean} true if this is a valid tag type, false if not
      */
     isValidHandleChild: function(node) {
         var valid = true;
         // var n = (node.nodeName == "#text") ? node.parentNode : node;
         var nodeName;
         try {
             nodeName = node.nodeName.toUpperCase();
         } catch(e) {
             nodeName = node.nodeName;
+        }
         valid = valid && !this.invalidHandleTypes[nodeName];
         valid = valid && !this.invalidHandleIds[node.id];
         for (var i=0, len=this.invalidHandleClasses.length; valid && i<len; ++i) {
             valid = !Dom.hasClass(node, this.invalidHandleClasses[i]);
+        }
         return valid;
     },
     /**
      * Create the array of horizontal tick marks if an interval was specified
      * in setXConstraint().
      * @method setXTicks
      * @private
      */
     setXTicks: function(iStartX, iTickSize) {
         this.xTicks = [];
         this.xTickSize = iTickSize;
         var tickMap = {};
         for (var i = this.initPageX; i >= this.minX; i = i - iTickSize) {
             if (!tickMap[i]) {
                 this.xTicks[this.xTicks.length] = i;
                 tickMap[i] = true;
+            }
+        }
         for (i = this.initPageX; i <= this.maxX; i = i + iTickSize) {
             if (!tickMap[i]) {
                 this.xTicks[this.xTicks.length] = i;
                 tickMap[i] = true;
+            }
+        }
         this.xTicks.sort(this.DDM.numericSort) ;
     },
     /**
      * Create the array of vertical tick marks if an interval was specified in
      * setYConstraint().
      * @method setYTicks
      * @private
      */
     setYTicks: function(iStartY, iTickSize) {
         this.yTicks = [];
         this.yTickSize = iTickSize;
         var tickMap = {};
         for (var i = this.initPageY; i >= this.minY; i = i - iTickSize) {
             if (!tickMap[i]) {
                 this.yTicks[this.yTicks.length] = i;
                 tickMap[i] = true;
+            }
+        }
         for (i = this.initPageY; i <= this.maxY; i = i + iTickSize) {
             if (!tickMap[i]) {
                 this.yTicks[this.yTicks.length] = i;
                 tickMap[i] = true;
+            }
+        }
         this.yTicks.sort(this.DDM.numericSort) ;
     },
     /**
      * By default, the element can be dragged any place on the screen.  Use
      * this method to limit the horizontal travel of the element.  Pass in
      * 0,0 for the parameters if you want to lock the drag to the y axis.
      * @method setXConstraint
      * @param {int} iLeft the number of pixels the element can move to the left
      * @param {int} iRight the number of pixels the element can move to the
      * right
      * @param {int} iTickSize optional parameter for specifying that the
      * element
      * should move iTickSize pixels at a time.
      */
     setXConstraint: function(iLeft, iRight, iTickSize) {
         this.leftConstraint = parseInt(iLeft, 10);
         this.rightConstraint = parseInt(iRight, 10);
         this.minX = this.initPageX - this.leftConstraint;
         this.maxX = this.initPageX + this.rightConstraint;
         if (iTickSize) { this.setXTicks(this.initPageX, iTickSize); }
         this.constrainX = true;
     },
     /**
      * Clears any constraints applied to this instance.  Also clears ticks
      * since they can't exist independent of a constraint at this time.
      * @method clearConstraints
      */
     clearConstraints: function() {
         this.constrainX = false;
         this.constrainY = false;
         this.clearTicks();
     },
     /**
      * Clears any tick interval defined for this instance
      * @method clearTicks
      */
     clearTicks: function() {
         this.xTicks = null;
         this.yTicks = null;
         this.xTickSize = 0;
         this.yTickSize = 0;
     },
     /**
      * By default, the element can be dragged any place on the screen.  Set
      * this to limit the vertical travel of the element.  Pass in 0,0 for the
      * parameters if you want to lock the drag to the x axis.
      * @method setYConstraint
      * @param {int} iUp the number of pixels the element can move up
      * @param {int} iDown the number of pixels the element can move down
      * @param {int} iTickSize optional parameter for specifying that the
      * element should move iTickSize pixels at a time.
      */
     setYConstraint: function(iUp, iDown, iTickSize) {
         this.topConstraint = parseInt(iUp, 10);
         this.bottomConstraint = parseInt(iDown, 10);
         this.minY = this.initPageY - this.topConstraint;
         this.maxY = this.initPageY + this.bottomConstraint;
         if (iTickSize) { this.setYTicks(this.initPageY, iTickSize); }
         this.constrainY = true;
     },
     /**
      * resetConstraints must be called if you manually reposition a dd element.
      * @method resetConstraints
      */
     resetConstraints: function() {
         // Maintain offsets if necessary
         if (this.initPageX || this.initPageX === 0) {
             // figure out how much this thing has moved
             var dx = (this.maintainOffset) ? this.lastPageX - this.initPageX : 0;
             var dy = (this.maintainOffset) ? this.lastPageY - this.initPageY : 0;
             this.setInitPosition(dx, dy);
         // This is the first time we have detected the element's position
         } else {
             this.setInitPosition();
+        }
         if (this.constrainX) {
             this.setXConstraint( this.leftConstraint,
                                  this.rightConstraint,
                                  this.xTickSize        );
+        }
         if (this.constrainY) {
             this.setYConstraint( this.topConstraint,
                                  this.bottomConstraint,
                                  this.yTickSize         );
+        }
     },
     /**
      * Normally the drag element is moved pixel by pixel, but we can specify
      * that it move a number of pixels at a time.  This method resolves the
      * location when we have it set up like this.
      * @method getTick
      * @param {int} val where we want to place the object
      * @param {int[]} tickArray sorted array of valid points
      * @return {int} the closest tick
      * @private
      */
     getTick: function(val, tickArray) {
         if (!tickArray) {
             // If tick interval is not defined, it is effectively 1 pixel,
             // so we return the value passed to us.
             return val;
         } else if (tickArray[0] >= val) {
             // The value is lower than the first tick, so we return the first
             // tick.
             return tickArray[0];
         } else {
             for (var i=0, len=tickArray.length; i<len; ++i) {
                 var next = i + 1;
                 if (tickArray[next] && tickArray[next] >= val) {
                     var diff1 = val - tickArray[i];
                     var diff2 = tickArray[next] - val;
                     return (diff2 > diff1) ? tickArray[i] : tickArray[next];
+                }
+            }
             // The value is larger than the last tick, so we return the last
             // tick.
             return tickArray[tickArray.length - 1];
+        }
     },
     /**
      * toString method
      * @method toString
      * @return {string} string representation of the dd obj
      */
     toString: function() {
         return ("DragDrop " + this.id);
+    }
 };
-            kweitzel
+YAHOO.augment(YAHOO.util.DragDrop, YAHOO.util.EventProvider);
             doc
-            kweitzel
+/**
 * @event mouseDownEvent
 * @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4MouseDownEvent
 * @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event mouseUpEvent
 * @description Fired from inside DragDropMgr when the drag operation is finished.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4StartDragEvent
 * @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event startDragEvent
 * @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4EndDragEvent
 * @description Fires before the endDragEvent. Returning false will cancel.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event endDragEvent
 * @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragEvent
 * @description Occurs every mousemove event while dragging.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragEvent
 * @description Fires before the dragEvent.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event invalidDropEvent
 * @description Fires when the dragged objects is dropped in a location that contains no drop targets.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragOutEvent
 * @description Fires before the dragOutEvent
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragOutEvent
 * @description Fires when a dragged object is no longer over an object that had the onDragEnter fire.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragEnterEvent
 * @description Occurs when the dragged object first interacts with another targettable drag and drop object.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragOverEvent
 * @description Fires before the dragOverEvent.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragOverEvent
 * @description Fires every mousemove event while over a drag and drop object.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragDropEvent
 * @description Fires before the dragDropEvent
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragDropEvent
 * @description Fires when the dragged objects is dropped on another.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
-            doc
+})();
 /**
  * A DragDrop implementation where the linked element follows the
  * mouse cursor during a drag.
  * @class DD
  * @extends YAHOO.util.DragDrop
  * @constructor
  * @param {String} id the id of the linked element
  * @param {String} sGroup the group of related DragDrop items
  * @param {object} config an object containing configurable attributes
  *                Valid properties for DD:
  *                    scroll
  */
 YAHOO.util.DD = function(id, sGroup, config) {
     if (id) {
         this.init(id, sGroup, config);
+    }
 };
 YAHOO.extend(YAHOO.util.DD, YAHOO.util.DragDrop, {
     /**
      * When set to true, the utility automatically tries to scroll the browser
-            kweitzel
+     * window when a drag and drop element is dragged near the viewport boundary.
-            doc
+     * Defaults to true.
      * @property scroll
      * @type boolean
      */
     scroll: true,
     /**
      * Sets the pointer offset to the distance between the linked element's top
      * left corner and the location the element was clicked
      * @method autoOffset
      * @param {int} iPageX the X coordinate of the click
      * @param {int} iPageY the Y coordinate of the click
      */
     autoOffset: function(iPageX, iPageY) {
         var x = iPageX - this.startPageX;
         var y = iPageY - this.startPageY;
         this.setDelta(x, y);
     },
     /**
      * Sets the pointer offset.  You can call this directly to force the
      * offset to be in a particular location (e.g., pass in 0,0 to set it
      * to the center of the object, as done in YAHOO.widget.Slider)
      * @method setDelta
      * @param {int} iDeltaX the distance from the left
      * @param {int} iDeltaY the distance from the top
      */
     setDelta: function(iDeltaX, iDeltaY) {
         this.deltaX = iDeltaX;
         this.deltaY = iDeltaY;
     },
     /**
      * Sets the drag element to the location of the mousedown or click event,
      * maintaining the cursor location relative to the location on the element
      * that was clicked.  Override this if you want to place the element in a
      * location other than where the cursor is.
      * @method setDragElPos
      * @param {int} iPageX the X coordinate of the mousedown or drag event
      * @param {int} iPageY the Y coordinate of the mousedown or drag event
      */
     setDragElPos: function(iPageX, iPageY) {
         // the first time we do this, we are going to check to make sure
         // the element has css positioning
         var el = this.getDragEl();
         this.alignElWithMouse(el, iPageX, iPageY);
     },
     /**
      * Sets the element to the location of the mousedown or click event,
      * maintaining the cursor location relative to the location on the element
      * that was clicked.  Override this if you want to place the element in a
      * location other than where the cursor is.
      * @method alignElWithMouse
      * @param {HTMLElement} el the element to move
      * @param {int} iPageX the X coordinate of the mousedown or drag event
      * @param {int} iPageY the Y coordinate of the mousedown or drag event
      */
     alignElWithMouse: function(el, iPageX, iPageY) {
         var oCoord = this.getTargetCoord(iPageX, iPageY);
         if (!this.deltaSetXY) {
             var aCoord = [oCoord.x, oCoord.y];
             YAHOO.util.Dom.setXY(el, aCoord);
             kweitzel
-            doc
+            var newLeft = parseInt( YAHOO.util.Dom.getStyle(el, "left"), 10 );
             var newTop  = parseInt( YAHOO.util.Dom.getStyle(el, "top" ), 10 );
             this.deltaSetXY = [ newLeft - oCoord.x, newTop - oCoord.y ];
         } else {
             YAHOO.util.Dom.setStyle(el, "left", (oCoord.x + this.deltaSetXY[0]) + "px");
             YAHOO.util.Dom.setStyle(el, "top",  (oCoord.y + this.deltaSetXY[1]) + "px");
+        }
         this.cachePosition(oCoord.x, oCoord.y);
         var self = this;
         setTimeout(function() {
             self.autoScroll.call(self, oCoord.x, oCoord.y, el.offsetHeight, el.offsetWidth);
         }, 0);
     },
     /**
      * Saves the most recent position so that we can reset the constraints and
      * tick marks on-demand.  We need to know this so that we can calculate the
      * number of pixels the element is offset from its original position.
      * @method cachePosition
      * @param iPageX the current x position (optional, this just makes it so we
      * don't have to look it up again)
      * @param iPageY the current y position (optional, this just makes it so we
      * don't have to look it up again)
      */
     cachePosition: function(iPageX, iPageY) {
         if (iPageX) {
             this.lastPageX = iPageX;
             this.lastPageY = iPageY;
         } else {
             var aCoord = YAHOO.util.Dom.getXY(this.getEl());
             this.lastPageX = aCoord[0];
             this.lastPageY = aCoord[1];
+        }
     },
     /**
      * Auto-scroll the window if the dragged object has been moved beyond the
      * visible window boundary.
      * @method autoScroll
      * @param {int} x the drag element's x position
      * @param {int} y the drag element's y position
      * @param {int} h the height of the drag element
      * @param {int} w the width of the drag element
      * @private
      */
     autoScroll: function(x, y, h, w) {
         if (this.scroll) {
             // The client height
             var clientH = this.DDM.getClientHeight();
             // The client width
             var clientW = this.DDM.getClientWidth();
             // The amt scrolled down
             var st = this.DDM.getScrollTop();
             // The amt scrolled right
             var sl = this.DDM.getScrollLeft();
             // Location of the bottom of the element
             var bot = h + y;
             // Location of the right of the element
             var right = w + x;
             // The distance from the cursor to the bottom of the visible area,
             // adjusted so that we don't scroll if the cursor is beyond the
             // element drag constraints
             var toBot = (clientH + st - y - this.deltaY);
             // The distance from the cursor to the right of the visible area
             var toRight = (clientW + sl - x - this.deltaX);
             // How close to the edge the cursor must be before we scroll
             // var thresh = (document.all) ? 100 : 40;
             var thresh = 40;
             // How many pixels to scroll per autoscroll op.  This helps to reduce
             // clunky scrolling. IE is more sensitive about this ... it needs this
             // value to be higher.
             var scrAmt = (document.all) ? 80 : 30;
             // Scroll down if we are near the bottom of the visible page and the
             // obj extends below the crease
             if ( bot > clientH && toBot < thresh ) {
                 window.scrollTo(sl, st + scrAmt);
+            }
             // Scroll up if the window is scrolled down and the top of the object
             // goes above the top border
             if ( y < st && st > 0 && y - st < thresh ) {
                 window.scrollTo(sl, st - scrAmt);
+            }
             // Scroll right if the obj is beyond the right border and the cursor is
             // near the border.
             if ( right > clientW && toRight < thresh ) {
                 window.scrollTo(sl + scrAmt, st);
+            }
             // Scroll left if the window has been scrolled to the right and the obj
             // extends past the left border
             if ( x < sl && sl > 0 && x - sl < thresh ) {
                 window.scrollTo(sl - scrAmt, st);
+            }
+        }
     },
     /*
      * Sets up config options specific to this class. Overrides
      * YAHOO.util.DragDrop, but all versions of this method through the
      * inheritance chain are called
      */
     applyConfig: function() {
         YAHOO.util.DD.superclass.applyConfig.call(this);
         this.scroll = (this.config.scroll !== false);
     },
     /*
      * Event that fires prior to the onMouseDown event.  Overrides
      * YAHOO.util.DragDrop.
      */
     b4MouseDown: function(e) {
         this.setStartPosition();
         // this.resetConstraints();
         this.autoOffset(YAHOO.util.Event.getPageX(e),
                             YAHOO.util.Event.getPageY(e));
     },
     /*
      * Event that fires prior to the onDrag event.  Overrides
      * YAHOO.util.DragDrop.
      */
     b4Drag: function(e) {
         this.setDragElPos(YAHOO.util.Event.getPageX(e),
                             YAHOO.util.Event.getPageY(e));
     },
     toString: function() {
         return ("DD " + this.id);
+    }
     //////////////////////////////////////////////////////////////////////////
     // Debugging ygDragDrop events that can be overridden
     //////////////////////////////////////////////////////////////////////////
     /*
     startDrag: function(x, y) {
     },
     onDrag: function(e) {
     },
     onDragEnter: function(e, id) {
     },
     onDragOver: function(e, id) {
     },
     onDragOut: function(e, id) {
     },
     onDragDrop: function(e, id) {
     },
     endDrag: function(e) {
+    }
     */
-            kweitzel
+/**
 * @event mouseDownEvent
 * @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4MouseDownEvent
 * @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event mouseUpEvent
 * @description Fired from inside DragDropMgr when the drag operation is finished.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4StartDragEvent
 * @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event startDragEvent
 * @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4EndDragEvent
 * @description Fires before the endDragEvent. Returning false will cancel.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event endDragEvent
 * @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragEvent
 * @description Occurs every mousemove event while dragging.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragEvent
 * @description Fires before the dragEvent.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event invalidDropEvent
 * @description Fires when the dragged objects is dropped in a location that contains no drop targets.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragOutEvent
 * @description Fires before the dragOutEvent
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragOutEvent
 * @description Fires when a dragged object is no longer over an object that had the onDragEnter fire.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragEnterEvent
 * @description Occurs when the dragged object first interacts with another targettable drag and drop object.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragOverEvent
 * @description Fires before the dragOverEvent.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragOverEvent
 * @description Fires every mousemove event while over a drag and drop object.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragDropEvent
 * @description Fires before the dragDropEvent
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragDropEvent
 * @description Fires when the dragged objects is dropped on another.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
-            doc
+});
 /**
  * A DragDrop implementation that inserts an empty, bordered div into
  * the document that follows the cursor during drag operations.  At the time of
  * the click, the frame div is resized to the dimensions of the linked html
  * element, and moved to the exact location of the linked element.
+ *
  * References to the "frame" element refer to the single proxy element that
  * was created to be dragged in place of all DDProxy elements on the
  * page.
+ *
  * @class DDProxy
  * @extends YAHOO.util.DD
  * @constructor
  * @param {String} id the id of the linked html element
  * @param {String} sGroup the group of related DragDrop objects
  * @param {object} config an object containing configurable attributes
  *                Valid properties for DDProxy in addition to those in DragDrop:
  *                   resizeFrame, centerFrame, dragElId
  */
 YAHOO.util.DDProxy = function(id, sGroup, config) {
     if (id) {
         this.init(id, sGroup, config);
         this.initFrame();
+    }
 };
 /**
  * The default drag frame div id
  * @property YAHOO.util.DDProxy.dragElId
  * @type String
  * @static
  */
 YAHOO.util.DDProxy.dragElId = "ygddfdiv";
 YAHOO.extend(YAHOO.util.DDProxy, YAHOO.util.DD, {
     /**
      * By default we resize the drag frame to be the same size as the element
      * we want to drag (this is to get the frame effect).  We can turn it off
      * if we want a different behavior.
      * @property resizeFrame
      * @type boolean
      */
     resizeFrame: true,
     /**
      * By default the frame is positioned exactly where the drag element is, so
      * we use the cursor offset provided by YAHOO.util.DD.  Another option that works only if
      * you do not have constraints on the obj is to have the drag frame centered
      * around the cursor.  Set centerFrame to true for this effect.
      * @property centerFrame
      * @type boolean
      */
     centerFrame: false,
     /**
      * Creates the proxy element if it does not yet exist
      * @method createFrame
      */
     createFrame: function() {
         var self=this, body=document.body;
         if (!body || !body.firstChild) {
             setTimeout( function() { self.createFrame(); }, 50 );
             return;
+        }
         var div=this.getDragEl(), Dom=YAHOO.util.Dom;
         if (!div) {
             div    = document.createElement("div");
             div.id = this.dragElId;
             var s  = div.style;
             s.position   = "absolute";
             s.visibility = "hidden";
             s.cursor     = "move";
             s.border     = "2px solid #aaa";
             s.zIndex     = 999;
             s.height     = "25px";
             s.width      = "25px";
             var _data = document.createElement('div');
             Dom.setStyle(_data, 'height', '100%');
             Dom.setStyle(_data, 'width', '100%');
             /**
             * If the proxy element has no background-color, then it is considered to the "transparent" by Internet Explorer.
             * Since it is "transparent" then the events pass through it to the iframe below.
             * So creating a "fake" div inside the proxy element and giving it a background-color, then setting it to an
             * opacity of 0, it appears to not be there, however IE still thinks that it is so the events never pass through.
             */
             Dom.setStyle(_data, 'background-color', '#ccc');
             Dom.setStyle(_data, 'opacity', '0');
             div.appendChild(_data);
             // appendChild can blow up IE if invoked prior to the window load event
             // while rendering a table.  It is possible there are other scenarios
             // that would cause this to happen as well.
             body.insertBefore(div, body.firstChild);
+        }
     },
     /**
      * Initialization for the drag frame element.  Must be called in the
      * constructor of all subclasses
      * @method initFrame
      */
     initFrame: function() {
         this.createFrame();
     },
     applyConfig: function() {
         YAHOO.util.DDProxy.superclass.applyConfig.call(this);
         this.resizeFrame = (this.config.resizeFrame !== false);
         this.centerFrame = (this.config.centerFrame);
         this.setDragElId(this.config.dragElId || YAHOO.util.DDProxy.dragElId);
     },
     /**
      * Resizes the drag frame to the dimensions of the clicked object, positions
      * it over the object, and finally displays it
      * @method showFrame
      * @param {int} iPageX X click position
      * @param {int} iPageY Y click position
      * @private
      */
     showFrame: function(iPageX, iPageY) {
         var el = this.getEl();
         var dragEl = this.getDragEl();
         var s = dragEl.style;
         this._resizeProxy();
         if (this.centerFrame) {
             this.setDelta( Math.round(parseInt(s.width,  10)/2),
                            Math.round(parseInt(s.height, 10)/2) );
+        }
         this.setDragElPos(iPageX, iPageY);
         YAHOO.util.Dom.setStyle(dragEl, "visibility", "visible");
     },
     /**
      * The proxy is automatically resized to the dimensions of the linked
      * element when a drag is initiated, unless resizeFrame is set to false
      * @method _resizeProxy
      * @private
      */
     _resizeProxy: function() {
         if (this.resizeFrame) {
             var DOM    = YAHOO.util.Dom;
             var el     = this.getEl();
             var dragEl = this.getDragEl();
             var bt = parseInt( DOM.getStyle(dragEl, "borderTopWidth"    ), 10);
             var br = parseInt( DOM.getStyle(dragEl, "borderRightWidth"  ), 10);
             var bb = parseInt( DOM.getStyle(dragEl, "borderBottomWidth" ), 10);
             var bl = parseInt( DOM.getStyle(dragEl, "borderLeftWidth"   ), 10);
             if (isNaN(bt)) { bt = 0; }
             if (isNaN(br)) { br = 0; }
             if (isNaN(bb)) { bb = 0; }
             if (isNaN(bl)) { bl = 0; }
             var newWidth  = Math.max(0, el.offsetWidth  - br - bl);
             var newHeight = Math.max(0, el.offsetHeight - bt - bb);
             DOM.setStyle( dragEl, "width",  newWidth  + "px" );
             DOM.setStyle( dragEl, "height", newHeight + "px" );
+        }
     },
     // overrides YAHOO.util.DragDrop
     b4MouseDown: function(e) {
         this.setStartPosition();
         var x = YAHOO.util.Event.getPageX(e);
         var y = YAHOO.util.Event.getPageY(e);
         this.autoOffset(x, y);
         // This causes the autoscroll code to kick off, which means autoscroll can
         // happen prior to the check for a valid drag handle.
         // this.setDragElPos(x, y);
     },
     // overrides YAHOO.util.DragDrop
     b4StartDrag: function(x, y) {
         // show the drag frame
         this.showFrame(x, y);
     },
     // overrides YAHOO.util.DragDrop
     b4EndDrag: function(e) {
         YAHOO.util.Dom.setStyle(this.getDragEl(), "visibility", "hidden");
     },
     // overrides YAHOO.util.DragDrop
     // By default we try to move the element to the last location of the frame.
     // This is so that the default behavior mirrors that of YAHOO.util.DD.
     endDrag: function(e) {
         var DOM = YAHOO.util.Dom;
         var lel = this.getEl();
         var del = this.getDragEl();
         // Show the drag frame briefly so we can get its position
         // del.style.visibility = "";
         DOM.setStyle(del, "visibility", "");
         // Hide the linked element before the move to get around a Safari
         // rendering bug.
         //lel.style.visibility = "hidden";
         DOM.setStyle(lel, "visibility", "hidden");
         YAHOO.util.DDM.moveToEl(lel, del);
         //del.style.visibility = "hidden";
         DOM.setStyle(del, "visibility", "hidden");
         //lel.style.visibility = "";
         DOM.setStyle(lel, "visibility", "");
     },
     toString: function() {
         return ("DDProxy " + this.id);
+    }
-            kweitzel
+/**
 * @event mouseDownEvent
 * @description Provides access to the mousedown event. The mousedown does not always result in a drag operation.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
             doc
-            kweitzel
+/**
 * @event b4MouseDownEvent
 * @description Provides access to the mousedown event, before the mouseDownEvent gets fired. Returning false will cancel the drag.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event mouseUpEvent
 * @description Fired from inside DragDropMgr when the drag operation is finished.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4StartDragEvent
 * @description Fires before the startDragEvent, returning false will cancel the startDrag Event.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event startDragEvent
 * @description Occurs after a mouse down and the drag threshold has been met. The drag threshold default is either 3 pixels of mouse movement or 1 full second of holding the mousedown.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4EndDragEvent
 * @description Fires before the endDragEvent. Returning false will cancel.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event endDragEvent
 * @description Fires on the mouseup event after a drag has been initiated (startDrag fired).
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragEvent
 * @description Occurs every mousemove event while dragging.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragEvent
 * @description Fires before the dragEvent.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event invalidDropEvent
 * @description Fires when the dragged objects is dropped in a location that contains no drop targets.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragOutEvent
 * @description Fires before the dragOutEvent
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragOutEvent
 * @description Fires when a dragged object is no longer over an object that had the onDragEnter fire.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragEnterEvent
 * @description Occurs when the dragged object first interacts with another targettable drag and drop object.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragOverEvent
 * @description Fires before the dragOverEvent.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragOverEvent
 * @description Fires every mousemove event while over a drag and drop object.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event b4DragDropEvent
 * @description Fires before the dragDropEvent
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
 /**
 * @event dragDropEvent
 * @description Fires when the dragged objects is dropped on another.
 * @type YAHOO.util.CustomEvent See <a href="YAHOO.util.Element.html#addListener">Element.addListener</a> for more information on listening for this event.
 */
-            doc
+});
 /**
  * A DragDrop implementation that does not move, but can be a drop
  * target.  You would get the same result by simply omitting implementation
  * for the event callbacks, but this way we reduce the processing cost of the
  * event listener and the callbacks.
  * @class DDTarget
  * @extends YAHOO.util.DragDrop
  * @constructor
  * @param {String} id the id of the element that is a drop target
  * @param {String} sGroup the group of related DragDrop objects
  * @param {object} config an object containing configurable attributes
  *                 Valid properties for DDTarget in addition to those in
  *                 DragDrop:
  *                    none
  */
 YAHOO.util.DDTarget = function(id, sGroup, config) {
     if (id) {
         this.initTarget(id, sGroup, config);
+    }
 };
 // YAHOO.util.DDTarget.prototype = new YAHOO.util.DragDrop();
 YAHOO.extend(YAHOO.util.DDTarget, YAHOO.util.DragDrop, {
     toString: function() {
         return ("DDTarget " + this.id);
+    }
 });
-            kweitzel
+YAHOO.register("dragdrop", YAHOO.util.DragDropMgr, {version: "2.8.0r4", build: "2449"});