Кеширование внешних изображений для Image и SWFLoader

[ShockWave512]

использую свой класс похожий на Dictionary

package *
{
	import *.KeyValuePair;
 
	import mx.controls.Alert;
 
	public class Dictionary extends Object
	{
		//[ArrayElementType("KeyValuePair")]
		private var pairs:Array = [];
 
 
		public function Dictionary()
		{
			super();
		}
 
		public function isExist(key:String):Boolean
		{
			for each (var item:KeyValuePair in pairs)
			{
				if ( item.key == key )
				{
					return true;
				}
			}
 
			return false;
		}
		/**
		 * Return null if both arguments null.
		 * Return KeyValuePair object if this success added in array,
		 * or key exists in storage.
		 */
		public function addItem(name:String, value:Object):KeyValuePair
		{
			// Check for non null values.
			if ( name == null || value == null ) return null;
			// Check for existing pair with given key.
			for each (var item:KeyValuePair in pairs)
			{
				if ( item.key == name )
				{
					return item;
				}
			}
 
			var pair:KeyValuePair = new KeyValuePair();
 
			pair.key = name;
			pair.value = value;
 
			pairs.push( pair );
 
			return pair;
		}
 
		public function getValue(key:String):Object
		{
			for each (var item:KeyValuePair in pairs)
			{
				if ( item.key == key )
				{
					return item.value;
				}
			}
			Alert.show("Dictionary.getValue(): KEY IN DICTIONARY DO NOT EXISTS !!!");
			return null;
		}
 
		public function reset():void
		{
			pairs = new Array();
		}
 
	}
}
 
 
package *
{
	public class KeyValuePair
	{
		public var key:String = "";
		public var value:Object = {};
 
		public function KeyValuePair()
		{
 
		}
	}
}