WB 2.11.0

/*

Copyright (c) 2009, Yahoo! Inc. All rights reserved.

Code licensed under the BSD License:

http://developer.yahoo.net/yui/license.txt

version: 2.8.0r4

*/

/**

 * The YAHOO object is the single global object used by YUI Library.  It

 * contains utility function for setting up namespaces, inheritance, and

 * logging.  YAHOO.util, YAHOO.widget, and YAHOO.example are namespaces

 * created automatically for and used by the library.

 * @module yahoo

 * @title  YAHOO Global

 */

/**

 * YAHOO_config is not included as part of the library.  Instead it is an 

 * object that can be defined by the implementer immediately before 

 * including the YUI library.  The properties included in this object

 * will be used to configure global properties needed as soon as the 

 * library begins to load.

 * @class YAHOO_config

 * @static

 */

/**

 * A reference to a function that will be executed every time a YAHOO module

 * is loaded.  As parameter, this function will receive the version

 * information for the module. See <a href="YAHOO.env.html#getVersion">

 * YAHOO.env.getVersion</a> for the description of the version data structure.

 * @property listener

 * @type Function

 * @static

 * @default undefined

 */

/**

 * Set to true if the library will be dynamically loaded after window.onload.

 * Defaults to false 

 * @property injecting

 * @type boolean

 * @static

 * @default undefined

 */

/**

 * Instructs the yuiloader component to dynamically load yui components and

 * their dependencies.  See the yuiloader documentation for more information

 * about dynamic loading

 * @property load

 * @static

 * @default undefined

 * @see yuiloader

 */

/**

 * Forces the use of the supplied locale where applicable in the library

 * @property locale

 * @type string

 * @static

 * @default undefined

 */

if (typeof YAHOO == "undefined" || !YAHOO) {

    /**

     * The YAHOO global namespace object.  If YAHOO is already defined, the

     * existing YAHOO object will not be overwritten so that defined

     * namespaces are preserved.

    * @class YAHOO

    * @static

     */

    var YAHOO = {};

}

/**

 * Returns the namespace specified and creates it if it doesn't exist

 * <pre>

 * YAHOO.namespace("property.package");

 * YAHOO.namespace("YAHOO.property.package");

 * </pre>

 * Either of the above would create YAHOO.property, then

 * YAHOO.property.package

 *

 * Be careful when naming packages. Reserved words may work in some browsers

 * and not others. For instance, the following will fail in Safari:

 * <pre>

 * YAHOO.namespace("really.long.nested.namespace");

 * </pre>

 * This fails because "long" is a future reserved word in ECMAScript

 *

 * For implementation code that uses YUI, do not create your components

 * in the namespaces defined by YUI (

 * <code>YAHOO.util</code>, 

 * <code>YAHOO.widget</code>, 

 * <code>YAHOO.lang</code>, 

 * <code>YAHOO.tool</code>, 

 * <code>YAHOO.example</code>, 

 * <code>YAHOO.env</code>) -- create your own namespace (e.g., 'companyname').

 *

 * @method namespace

 * @static

 * @param  {String*} arguments 1-n namespaces to create 

 * @return {Object}  A reference to the last namespace object created

 */

YAHOO.namespace = function() {

    var a=arguments, o=null, i, j, d;

    for (i=0; i<a.length; i=i+1) {

        d=(""+a[i]).split(".");

        o=YAHOO;

        // YAHOO is implied, so it is ignored if it is included

        for (j=(d[0] == "YAHOO") ? 1 : 0; j<d.length; j=j+1) {

            o[d[j]]=o[d[j]] || {};

            o=o[d[j]];

        }

    }

    return o;

};

/**

 * Uses YAHOO.widget.Logger to output a log message, if the widget is

 * available.

 *

 * @method log

 * @static

 * @param  {String}  msg  The message to log.

 * @param  {String}  cat  The log category for the message.  Default

 *                        categories are "info", "warn", "error", time".

 *                        Custom categories can be used as well. (opt)

 * @param  {String}  src  The source of the the message (opt)

 * @return {Boolean}      True if the log operation was successful.

 */

YAHOO.log = function(msg, cat, src) {

    var l=YAHOO.widget.Logger;

    if(l && l.log) {

        return l.log(msg, cat, src);

    } else {

        return false;

    }

};

/**

 * Registers a module with the YAHOO object

 * @method register

 * @static

 * @param {String}   name    the name of the module (event, slider, etc)

 * @param {Function} mainClass a reference to class in the module.  This

 *                             class will be tagged with the version info

 *                             so that it will be possible to identify the

 *                             version that is in use when multiple versions

 *                             have loaded

 * @param {Object}   data      metadata object for the module.  Currently it

 *                             is expected to contain a "version" property

 *                             and a "build" property at minimum.

 */

YAHOO.register = function(name, mainClass, data) {

    var mods = YAHOO.env.modules, m, v, b, ls, i;

    if (!mods[name]) {

        mods[name] = { 

            versions:[], 

            builds:[] 

        };

    }

    m  = mods[name];

    v  = data.version;

    b  = data.build;

    ls = YAHOO.env.listeners;

    m.name = name;

    m.version = v;

    m.build = b;

    m.versions.push(v);

    m.builds.push(b);

    m.mainClass = mainClass;

    // fire the module load listeners

    for (i=0;i<ls.length;i=i+1) {

        ls[i](m);

    }

    // label the main class

    if (mainClass) {

        mainClass.VERSION = v;

        mainClass.BUILD = b;

    } else {

        YAHOO.log("mainClass is undefined for module " + name, "warn");

    }

};

/**

 * YAHOO.env is used to keep track of what is known about the YUI library and

 * the browsing environment

 * @class YAHOO.env

 * @static

 */

YAHOO.env = YAHOO.env || {

    /**

     * Keeps the version info for all YUI modules that have reported themselves

    * @property modules

    * @type Object[]

     */

    modules: [],

    /**

     * List of functions that should be executed every time a YUI module

     * reports itself.

    * @property listeners

    * @type Function[]

     */

    listeners: []

};

/**

 * Returns the version data for the specified module:

 *      <dl>

 *      <dt>name:</dt>      <dd>The name of the module</dd>

 *      <dt>version:</dt>   <dd>The version in use</dd>

 *      <dt>build:</dt>     <dd>The build number in use</dd>

 *      <dt>versions:</dt>  <dd>All versions that were registered</dd>

 *      <dt>builds:</dt>    <dd>All builds that were registered.</dd>

 *      <dt>mainClass:</dt> <dd>An object that was was stamped with the

 *                 current version and build. If 

 *                 mainClass.VERSION != version or mainClass.BUILD != build,

 *                 multiple versions of pieces of the library have been

 *                 loaded, potentially causing issues.</dd>

 *       </dl>

 *

 * @method getVersion

 * @static

 * @param {String}  name the name of the module (event, slider, etc)

 * @return {Object} The version info

 */

YAHOO.env.getVersion = function(name) {

    return YAHOO.env.modules[name] || null;

};

/**

 * Do not fork for a browser if it can be avoided.  Use feature detection when

 * you can.  Use the user agent as a last resort.  YAHOO.env.ua stores a version

 * number for the browser engine, 0 otherwise.  This value may or may not map

 * to the version number of the browser using the engine.  The value is 

 * presented as a float so that it can easily be used for boolean evaluation 

 * as well as for looking for a particular range of versions.  Because of this, 

 * some of the granularity of the version info may be lost (e.g., Gecko 1.8.0.9 

 * reports 1.8).

 * @class YAHOO.env.ua

 * @static

 */

YAHOO.env.ua = function() {

        var numberfy = function(s) {

            var c = 0;

            return parseFloat(s.replace(/\./g, function() {

                return (c++ == 1) ? '' : '.';

            }));

        },

        nav = navigator,

        o = {

        /**

         * Internet Explorer version number or 0.  Example: 6

        * @property ie

        * @type float

         */

        ie: 0,

        /**

         * Opera version number or 0.  Example: 9.2

        * @property opera

        * @type float

         */

        opera: 0,

        /**

         * Gecko engine revision number.  Will evaluate to 1 if Gecko 

         * is detected but the revision could not be found. Other browsers

         * will be 0.  Example: 1.8

         * <pre>

         * Firefox 1.0.0.4: 1.7.8   <-- Reports 1.7

         * Firefox 1.5.0.9: 1.8.0.9 <-- Reports 1.8

         * Firefox 2.0.0.3: 1.8.1.3 <-- Reports 1.8

         * Firefox 3 alpha: 1.9a4   <-- Reports 1.9

         * </pre>

        * @property gecko

        * @type float

         */

        gecko: 0,

        /**

         * AppleWebKit version.  KHTML browsers that are not WebKit browsers 

         * will evaluate to 1, other browsers 0.  Example: 418.9.1

         * <pre>

         * Safari 1.3.2 (312.6): 312.8.1 <-- Reports 312.8 -- currently the 

         *                                   latest available for Mac OSX 10.3.

         * Safari 2.0.2:         416     <-- hasOwnProperty introduced

         * Safari 2.0.4:         418     <-- preventDefault fixed

         * Safari 2.0.4 (419.3): 418.9.1 <-- One version of Safari may run

         *                                   different versions of webkit

         * Safari 2.0.4 (419.3): 419     <-- Tiger installations that have been

         *                                   updated, but not updated

         *                                   to the latest patch.

         * Webkit 212 nightly:   522+    <-- Safari 3.0 precursor (with native SVG

         *                                   and many major issues fixed).  

         * 3.x yahoo.com, flickr:422     <-- Safari 3.x hacks the user agent

         *                                   string when hitting yahoo.com and 

         *                                   flickr.com.

         * Safari 3.0.4 (523.12):523.12  <-- First Tiger release - automatic update

         *                                   from 2.x via the 10.4.11 OS patch

         * Webkit nightly 1/2008:525+    <-- Supports DOMContentLoaded event.

         *                                   yahoo.com user agent hack removed.

         *                                   

         * </pre>

         * http://developer.apple.com/internet/safari/uamatrix.html

        * @property webkit

        * @type float

         */

        webkit: 0,

        /**

         * The mobile property will be set to a string containing any relevant

         * user agent information when a modern mobile browser is detected.

         * Currently limited to Safari on the iPhone/iPod Touch, Nokia N-series

         * devices with the WebKit-based browser, and Opera Mini.  

        * @property mobile 

        * @type string

         */

        mobile: null,

        /**

         * Adobe AIR version number or 0.  Only populated if webkit is detected.

         * Example: 1.0

        * @property air

        * @type float

         */

        air: 0,

        /**

         * Google Caja version number or 0.

        * @property caja

        * @type float

         */

        caja: nav.cajaVersion,

        /**

         * Set to true if the page appears to be in SSL

        * @property secure

        * @type boolean

        * @static

         */

        secure: false,

        /**

         * The operating system.  Currently only detecting windows or macintosh

        * @property os

        * @type string

        * @static

         */

        os: null

    },

    ua = navigator && navigator.userAgent, 

    loc = window && window.location,

    href = loc && loc.href,

    m;

    o.secure = href && (href.toLowerCase().indexOf("https") === 0);

    if (ua) {

        if ((/windows|win32/i).test(ua)) {

            o.os = 'windows';

        } else if ((/macintosh/i).test(ua)) {

            o.os = 'macintosh';

        }

        // Modern KHTML browsers should qualify as Safari X-Grade

        if ((/KHTML/).test(ua)) {

            o.webkit=1;

        }

        // Modern WebKit browsers are at least X-Grade

        m=ua.match(/AppleWebKit\/([^\s]*)/);

        if (m&&m[1]) {

            o.webkit=numberfy(m[1]);

            // Mobile browser check

            if (/ Mobile\//.test(ua)) {

                o.mobile = "Apple"; // iPhone or iPod Touch

            } else {

                m=ua.match(/NokiaN[^\/]*/);

                if (m) {

                    o.mobile = m[0]; // Nokia N-series, ex: NokiaN95

                }

            }

            m=ua.match(/AdobeAIR\/([^\s]*)/);

            if (m) {

                o.air = m[0]; // Adobe AIR 1.0 or better

            }

        }

        if (!o.webkit) { // not webkit

            // @todo check Opera/8.01 (J2ME/MIDP; Opera Mini/2.0.4509/1316; fi; U; ssr)

            m=ua.match(/Opera[\s\/]([^\s]*)/);

            if (m&&m[1]) {

                o.opera=numberfy(m[1]);

                m=ua.match(/Opera Mini[^;]*/);

                if (m) {

                    o.mobile = m[0]; // ex: Opera Mini/2.0.4509/1316

                }

            } else { // not opera or webkit

                m=ua.match(/MSIE\s([^;]*)/);

                if (m&&m[1]) {

                    o.ie=numberfy(m[1]);

                } else { // not opera, webkit, or ie

                    m=ua.match(/Gecko\/([^\s]*)/);

                    if (m) {

                        o.gecko=1; // Gecko detected, look for revision

                        m=ua.match(/rv:([^\s\)]*)/);

                        if (m&&m[1]) {

                            o.gecko=numberfy(m[1]);

                        }

                    }

                }

            }

        }

    }

    return o;

}();

/*

 * Initializes the global by creating the default namespaces and applying

 * any new configuration information that is detected.  This is the setup

 * for env.

 * @method init

 * @static

 * @private

 */

(function() {

    YAHOO.namespace("util", "widget", "example");

    /*global YAHOO_config*/

    if ("undefined" !== typeof YAHOO_config) {

        var l=YAHOO_config.listener, ls=YAHOO.env.listeners,unique=true, i;

        if (l) {

            // if YAHOO is loaded multiple times we need to check to see if

            // this is a new config object.  If it is, add the new component

            // load listener to the stack

            for (i=0; i<ls.length; i++) {

                if (ls[i] == l) {

                    unique = false;

                    break;

                }

            }

            if (unique) {

                ls.push(l);

            }

        }

    }

})();

/**

 * Provides the language utilites and extensions used by the library

 * @class YAHOO.lang

 */

YAHOO.lang = YAHOO.lang || {};

(function() {

var L = YAHOO.lang,

    OP = Object.prototype,

    ARRAY_TOSTRING = '[object Array]',

    FUNCTION_TOSTRING = '[object Function]',

    OBJECT_TOSTRING = '[object Object]',

    NOTHING = [],

    // ADD = ["toString", "valueOf", "hasOwnProperty"],

    ADD = ["toString", "valueOf"],

    OB = {

    /**

     * Determines wheather or not the provided object is an array.

    * @method isArray

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isArray: function(o) { 

        return OP.toString.apply(o) === ARRAY_TOSTRING;

    },

    /**

     * Determines whether or not the provided object is a boolean

    * @method isBoolean

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isBoolean: function(o) {

        return typeof o === 'boolean';

    },

    /**

     * Determines whether or not the provided object is a function.

     * Note: Internet Explorer thinks certain functions are objects:

     *

     * var obj = document.createElement("object");

     * YAHOO.lang.isFunction(obj.getAttribute) // reports false in IE

     *

     * var input = document.createElement("input"); // append to body

     * YAHOO.lang.isFunction(input.focus) // reports false in IE

     *

     * You will have to implement additional tests if these functions

     * matter to you.

     *

    * @method isFunction

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isFunction: function(o) {

        return (typeof o === 'function') || OP.toString.apply(o) === FUNCTION_TOSTRING;

    },

    /**

     * Determines whether or not the provided object is null

    * @method isNull

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isNull: function(o) {

        return o === null;

    },

    /**

     * Determines whether or not the provided object is a legal number

    * @method isNumber

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isNumber: function(o) {

        return typeof o === 'number' && isFinite(o);

    },

    /**

     * Determines whether or not the provided object is of type object

     * or function

    * @method isObject

    * @param {any} o The object being testing

    * @return {boolean} the result

     */  

    isObject: function(o) {

return (o && (typeof o === 'object' || L.isFunction(o))) || false;

    },

    /**

     * Determines whether or not the provided object is a string

    * @method isString

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isString: function(o) {

        return typeof o === 'string';

    },

    /**

     * Determines whether or not the provided object is undefined

    * @method isUndefined

    * @param {any} o The object being testing

    * @return {boolean} the result

     */

    isUndefined: function(o) {

        return typeof o === 'undefined';

    },

    /**

     * IE will not enumerate native functions in a derived object even if the

     * function was overridden.  This is a workaround for specific functions 

     * we care about on the Object prototype. 

    * @property _IEEnumFix

    * @param {Function} r  the object to receive the augmentation

    * @param {Function} s  the object that supplies the properties to augment

    * @static

    * @private

     */

    _IEEnumFix: (YAHOO.env.ua.ie) ? function(r, s) {

            var i, fname, f;

            for (i=0;i<ADD.length;i=i+1) {

                fname = ADD[i];

                f = s[fname];

                if (L.isFunction(f) && f!=OP[fname]) {

                    r[fname]=f;

                }

            }

    } : function(){},

    /**

     * Utility to set up the prototype, constructor and superclass properties to

     * support an inheritance strategy that can chain constructors and methods.

     * Static members will not be inherited.

     *

    * @method extend

    * @static

    * @param {Function} subc   the object to modify

    * @param {Function} superc the object to inherit

    * @param {Object} overrides  additional properties/methods to add to the

     *                              subclass prototype.  These will override the

     *                              matching items obtained from the superclass 

     *                              if present.

     */

    extend: function(subc, superc, overrides) {

        if (!superc||!subc) {

            throw new Error("extend failed, please check that " +

                            "all dependencies are included.");

        }

        var F = function() {}, i;

        F.prototype=superc.prototype;

        subc.prototype=new F();

        subc.prototype.constructor=subc;

        subc.superclass=superc.prototype;

        if (superc.prototype.constructor == OP.constructor) {

            superc.prototype.constructor=superc;

        }

        if (overrides) {

            for (i in overrides) {

                if (L.hasOwnProperty(overrides, i)) {

                    subc.prototype[i]=overrides[i];

                }

            }

            L._IEEnumFix(subc.prototype, overrides);

        }

    },

    /**

     * Applies all properties in the supplier to the receiver if the

     * receiver does not have these properties yet.  Optionally, one or 

     * more methods/properties can be specified (as additional 

     * parameters).  This option will overwrite the property if receiver 

     * has it already.  If true is passed as the third parameter, all 

     * properties will be applied and _will_ overwrite properties in 

     * the receiver.

     *

    * @method augmentObject

    * @static

    * @since 2.3.0

    * @param {Function} r  the object to receive the augmentation

    * @param {Function} s  the object that supplies the properties to augment

    * @param {String*|boolean}  arguments zero or more properties methods 

     *        to augment the receiver with.  If none specified, everything

     *        in the supplier will be used unless it would

     *        overwrite an existing property in the receiver. If true

     *        is specified as the third parameter, all properties will

     *        be applied and will overwrite an existing property in

     *        the receiver

     */

    augmentObject: function(r, s) {

        if (!s||!r) {

            throw new Error("Absorb failed, verify dependencies.");

        }

        var a=arguments, i, p, overrideList=a[2];

        if (overrideList && overrideList!==true) { // only absorb the specified properties

            for (i=2; i<a.length; i=i+1) {

                r[a[i]] = s[a[i]];

            }

        } else { // take everything, overwriting only if the third parameter is true

            for (p in s) { 

                if (overrideList || !(p in r)) {

                    r[p] = s[p];

                }

            }

            L._IEEnumFix(r, s);

        }

    },

    /**

     * Same as YAHOO.lang.augmentObject, except it only applies prototype properties

    * @see YAHOO.lang.augmentObject

    * @method augmentProto

    * @static

    * @param {Function} r  the object to receive the augmentation

    * @param {Function} s  the object that supplies the properties to augment

    * @param {String*|boolean}  arguments zero or more properties methods 

     *        to augment the receiver with.  If none specified, everything 

     *        in the supplier will be used unless it would overwrite an existing 

     *        property in the receiver.  if true is specified as the third 

     *        parameter, all properties will be applied and will overwrite an 

     *        existing property in the receiver

     */

    augmentProto: function(r, s) {

        if (!s||!r) {

            throw new Error("Augment failed, verify dependencies.");

        }

        //var a=[].concat(arguments);

        var a=[r.prototype,s.prototype], i;

        for (i=2;i<arguments.length;i=i+1) {

            a.push(arguments[i]);

        }

        L.augmentObject.apply(this, a);

    },

    /**

     * Returns a simple string representation of the object or array.

     * Other types of objects will be returned unprocessed.  Arrays

     * are expected to be indexed.  Use object notation for

     * associative arrays.

    * @method dump

    * @since 2.3.0

    * @param o {Object} The object to dump

    * @param d {int} How deep to recurse child objects, default 3

    * @return {String} the dump result

     */

    dump: function(o, d) {

        var i,len,s=[],OBJ="{...}",FUN="f(){...}",

            COMMA=', ', ARROW=' => ';

        // Cast non-objects to string

        // Skip dates because the std toString is what we want

        // Skip HTMLElement-like objects because trying to dump 

        // an element will cause an unhandled exception in FF 2.x

        if (!L.isObject(o)) {

            return o + "";

        } else if (o instanceof Date || ("nodeType" in o && "tagName" in o)) {

            return o;

        } else if  (L.isFunction(o)) {

            return FUN;

        }

        // dig into child objects the depth specifed. Default 3

        d = (L.isNumber(d)) ? d : 3;

        // arrays [1, 2, 3]

        if (L.isArray(o)) {

            s.push("[");

            for (i=0,len=o.length;i<len;i=i+1) {

                if (L.isObject(o[i])) {

                    s.push((d > 0) ? L.dump(o[i], d-1) : OBJ);

                } else {

                    s.push(o[i]);

                }

                s.push(COMMA);

            }

            if (s.length > 1) {

                s.pop();

            }

            s.push("]");

        // objects {k1 => v1, k2 => v2}

        } else {

            s.push("{");

            for (i in o) {

                if (L.hasOwnProperty(o, i)) {

                    s.push(i + ARROW);

                    if (L.isObject(o[i])) {

                        s.push((d > 0) ? L.dump(o[i], d-1) : OBJ);

                    } else {

                        s.push(o[i]);

                    }

                    s.push(COMMA);

                }

            }

            if (s.length > 1) {

                s.pop();

            }

            s.push("}");

        }

        return s.join("");

    },

    /**

     * Does variable substitution on a string. It scans through the string 

     * looking for expressions enclosed in { } braces. If an expression 

     * is found, it is used a key on the object.  If there is a space in

     * the key, the first word is used for the key and the rest is provided

     * to an optional function to be used to programatically determine the

     * value (the extra information might be used for this decision). If 

     * the value for the key in the object, or what is returned from the

     * function has a string value, number value, or object value, it is 

     * substituted for the bracket expression and it repeats.  If this

     * value is an object, it uses the Object's toString() if this has

     * been overridden, otherwise it does a shallow dump of the key/value

     * pairs.

    * @method substitute

    * @since 2.3.0

    * @param s {String} The string that will be modified.

    * @param o {Object} An object containing the replacement values

    * @param f {Function} An optional function that can be used to

     *                     process each match.  It receives the key,

     *                     value, and any extra metadata included with

     *                     the key inside of the braces.

    * @return {String} the substituted string

     */

    substitute: function (s, o, f) {

        var i, j, k, key, v, meta, saved=[], token, 

            DUMP='dump', SPACE=' ', LBRACE='{', RBRACE='}',

            dump, objstr;

        for (;;) {

            i = s.lastIndexOf(LBRACE);

            if (i < 0) {

                break;

            }

            j = s.indexOf(RBRACE, i);

            if (i + 1 >= j) {

                break;

            }

            //Extract key and meta info 

            token = s.substring(i + 1, j);

            key = token;

            meta = null;

            k = key.indexOf(SPACE);

            if (k > -1) {

                meta = key.substring(k + 1);

                key = key.substring(0, k);

            }

            // lookup the value

            v = o[key];

            // if a substitution function was provided, execute it

            if (f) {

                v = f(key, v, meta);

            }

            if (L.isObject(v)) {

                if (L.isArray(v)) {

                    v = L.dump(v, parseInt(meta, 10));

                } else {

                    meta = meta || "";

                    // look for the keyword 'dump', if found force obj dump

                    dump = meta.indexOf(DUMP);

                    if (dump > -1) {

                        meta = meta.substring(4);

                    }

                    objstr = v.toString();

                    // use the toString if it is not the Object toString 

                    // and the 'dump' meta info was not found

                    if (objstr === OBJECT_TOSTRING || dump > -1) {

                        v = L.dump(v, parseInt(meta, 10));

                    } else {

                        v = objstr;

                    }

                }

            } else if (!L.isString(v) && !L.isNumber(v)) {

                // This {block} has no replace string. Save it for later.

                v = "~-" + saved.length + "-~";

                saved[saved.length] = token;

                // break;

            }

            s = s.substring(0, i) + v + s.substring(j + 1);

        }

        // restore saved {block}s

        for (i=saved.length-1; i>=0; i=i-1) {

            s = s.replace(new RegExp("~-" + i + "-~"), "{"  + saved[i] + "}", "g");

        }

        return s;

    },

    /**

     * Returns a string without any leading or trailing whitespace.  If 

     * the input is not a string, the input will be returned untouched.

    * @method trim

    * @since 2.3.0

    * @param s {string} the string to trim

    * @return {string} the trimmed string

     */

    trim: function(s){

        try {

            return s.replace(/^\s+|\s+$/g, "");

        } catch(e) {

            return s;

        }

    },

    /**

     * Returns a new object containing all of the properties of

     * all the supplied objects.  The properties from later objects

     * will overwrite those in earlier objects.

    * @method merge

    * @since 2.3.0

    * @param arguments {Object*} the objects to merge

    * @return the new merged object

     */

    merge: function() {

        var o={}, a=arguments, l=a.length, i;

        for (i=0; i<l; i=i+1) {

            L.augmentObject(o, a[i], true);

        }

        return o;

    },

    /**

     * Executes the supplied function in the context of the supplied 

     * object 'when' milliseconds later.  Executes the function a 

     * single time unless periodic is set to true.

    * @method later

    * @since 2.4.0

    * @param when {int} the number of milliseconds to wait until the fn 

     * is executed

    * @param o the context object

    * @param fn {Function|String} the function to execute or the name of 

     * the method in the 'o' object to execute

    * @param data [Array] data that is provided to the function.  This accepts

     * either a single item or an array.  If an array is provided, the

     * function is executed with one parameter for each array item.  If

     * you need to pass a single array parameter, it needs to be wrapped in

     * an array [myarray]

    * @param periodic {boolean} if true, executes continuously at supplied 

     * interval until canceled

    * @return a timer object. Call the cancel() method on this object to 

     * stop the timer.

     */

    later: function(when, o, fn, data, periodic) {

        when = when || 0; 

        o = o || {};

        var m=fn, d=data, f, r;

        if (L.isString(fn)) {

            m = o[fn];

        }

        if (!m) {

            throw new TypeError("method undefined");

        }

        if (d && !L.isArray(d)) {

            d = [data];

        }

        f = function() {

            m.apply(o, d || NOTHING);

        };

        r = (periodic) ? setInterval(f, when) : setTimeout(f, when);