text: /*
   * Metadata - jQuery plugin for parsing metadata from elements
   *
   * Copyright (c) 2006 John Resig, Yehuda Katz, J�örn Zaefferer, Paul McLanahan
   *
   * Dual licensed under the MIT and GPL licenses:
   *   http://www.opensource.org/licenses/mit-license.php
   *   http://www.gnu.org/licenses/gpl.html
   *
   * Revision: $Id$
   *
   */
  
  /**
   * Sets the type of metadata to use. Metadata is encoded in JSON, and each property
   * in the JSON will become a property of the element itself.
   *
   * There are three supported types of metadata storage:
   *
   *   attr:  Inside an attribute. The name parameter indicates *which* attribute.
   *          
   *   class: Inside the class attribute, wrapped in curly braces: { }
   *   
   *   elem:  Inside a child element (e.g. a script tag). The
   *          name parameter indicates *which* element.
   *          
   * The metadata for an element is loaded the first time the element is accessed via jQuery.
   *
   * As a result, you can define the metadata type, use $(expr) to load the metadata into the elements
   * matched by expr, then redefine the metadata type and run another $(expr) for other elements.
   * 
   * @name $.metadata.setType
   *
   * @example <p id="one" class="some_class {item_id: 1, item_label: 'Label'}">This is a p</p>
   * @before $.metadata.setType("class")
   * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
   * @desc Reads metadata from the class attribute
   * 
   * @example <p id="one" class="some_class" data="{item_id: 1, item_label: 'Label'}">This is a p</p>
   * @before $.metadata.setType("attr", "data")
   * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
   * @desc Reads metadata from a "data" attribute
   * 
   * @example <p id="one" class="some_class"><script>{item_id: 1, item_label: 'Label'}</script>This is a p</p>
   * @before $.metadata.setType("elem", "script")
   * @after $("#one").metadata().item_id == 1; $("#one").metadata().item_label == "Label"
   * @desc Reads metadata from a nested script element
   * 
   * @param String type The encoding type
   * @param String name The name of the attribute to be used to get metadata (optional)
   * @cat Plugins/Metadata
   * @descr Sets the type of encoding to be used when loading metadata for the first time
   * @type undefined
   * @see metadata()
   */
  
  
  (function($) {
  
  $.extend({
  	metadata : {
  		defaults : {
  			type: 'class',
  			name: 'metadata',
  			cre: /({.*})/,
  			single: 'metadata'
  		},
  		setType: function( type, name ){
  			this.defaults.type = type;
  			this.defaults.name = name;
  		},
  		get: function( elem, opts ){
  			var settings = $.extend({},this.defaults,opts);
  			// check for empty string in single property
  			if ( !settings.single.length ) settings.single = 'metadata';
  			
  			var data = $.data(elem, settings.single);
  			// returned cached data if it already exists
  			if ( data ) return data;
  			
  			data = "{}";
  			
  			if ( settings.type == "class" ) {
  				var m = settings.cre.exec( elem.className );
  				if ( m )
  					data = m[1];
  			} else if ( settings.type == "elem" ) {
  				if( !elem.getElementsByTagName )
  					return undefined;
  				var e = elem.getElementsByTagName(settings.name);
  				if ( e.length )
  					data = $.trim(e[0].innerHTML);
  			} else if ( elem.getAttribute != undefined ) {
  				var attr = elem.getAttribute( settings.name );
  				if ( attr )
  					data = attr;
  			}
  			
  			if ( data.indexOf( '{' ) <0 )
  			data = "{" + data + "}";
  			
  			data = eval("(" + data + ")");
  			
  			$.data( elem, settings.single, data );
  			return data;
  		}
  	}
  });
  
  /**
   * Returns the metadata object for the first member of the jQuery object.
   *
   * @name metadata
   * @descr Returns element's metadata object
   * @param Object opts An object contianing settings to override the defaults
   * @type jQuery
   * @cat Plugins/Metadata
   */
  $.fn.metadata = function( opts ){
  	return $.metadata.get( this[0], opts );
  };
  
  })(jQuery);
  