flex动态加载swf皮肤

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="https://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
			   creationComplete="initHandler(event)">
	<fx:Script>
		<![CDATA[
			import flash.utils.clearTimeout;
			import flash.utils.setTimeout;
			
			import mx.events.FlexEvent;
			private var styleurl:String="";

			private var setTimeout2:uint;
			protected function initHandler(event:FlexEvent):void
			{
				styleurl="style01.swf";
        	    styleManager.loadStyleDeclarations(styleurl,true);			
			}
			
			protected function t1_clickHandler(event:MouseEvent):void
			{
				if(styleurl!=null)
				{
				styleManager.unloadStyleDeclarations(styleurl,true);
				}
				styleManager.loadStyleDeclarations("style02.swf",true);
				styleurl="style02.swf";
			}
			
			protected function button1_clickHandler(event:MouseEvent):void
			{
				setTimeout2 = setTimeout(button1_click,2000);
			}
			
			private function button1_click():void
			{
				if(styleurl!=null)
				{
					styleManager.unloadStyleDeclarations(styleurl,true);
				}
				styleManager.loadStyleDeclarations("style03.swf",true);
				styleurl="style03.swf";
				clearTimeout(setTimeout2);
				
			}
			
			protected function button2_clickHandler(event:MouseEvent):void
			{
				// TODO Auto-generated method stub
				if(styleurl!=null)
				{
					styleManager.unloadStyleDeclarations(styleurl,true);
				}
				styleManager.loadStyleDeclarations("style01.swf",true);
				styleurl="style01.swf";
			}
			
		]]>
	</fx:Script>
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	<s:Panel horizontalCenter="0" y="100" width="422" height="300" title="用户登录">
		<s:layout>
		     <s:VerticalLayout horizontalAlign="center" verticalAlign="middle" gap="28"/>
		</s:layout>
		<s:HGroup verticalAlign="middle">
		<s:Label text="用户名"/>
		<s:TextInput id="t1" styleName="textInput" prompt="请输入用户名"/>
		</s:HGroup>
		<s:HGroup verticalAlign="middle" paddingLeft="20">
		<s:Label text="密码" id="t2"/>
		<s:TextInput styleName="textInput" prompt="请输入密码"/>
		</s:HGroup>
		<s:controlBarContent>
			<s:Button label="小粉红" click="t1_clickHandler(event)" color="0xFF00FF"/>
			<s:Button label="经典蓝(2秒)" click="button1_clickHandler(event)" color="0x4169E1"/>
			<s:Button label="青草绿(默认)" click="button2_clickHandler(event)" color="0x00FF00"/>
		</s:controlBarContent>
		<s:controlBarLayout>
			<s:HorizontalLayout gap="39"/>
		</s:controlBarLayout>
	</s:Panel>
</s:Application>

/* CSS file */
@namespace s "library://ns.adobe.com/flex/spark";
@namespace mx "library://ns.adobe.com/flex/mx";

global
{
	color:#dc143c;
	fontFamily:"微软雅黑";
	borderColor:#caff70;
	fontSize:20;
	borderWeight:3;
}
s|Panel
{
	backgroundColor:"#00FF00";
	backgroundAlpha:0.3;
}
s|TextInput
{
	color:#ff0000;
	fontFamily:"微软雅黑";
	borderColor:#ffff00;
	fontSize:20;
}
s|Button
{
    paddingleft:"10";
	paddingtop:"5";
}
.textInput
{
	color:#cd8500;
	fontFamily:"微软雅黑";
	borderColor:#ff0000;
	fontSize:20;
}
#t1
{
	color:#00ff00;
	fontFamily:"微软雅黑";
	borderColor:#0000ff;
	fontSize:20;
}
#t2
{
	color:#0000ff;
	fontFamily:"微软雅黑";
	borderColor:#ff00ff;
	fontSize:20;
}

/* CSS file */
@namespace s "library://ns.adobe.com/flex/spark";
@namespace mx "library://ns.adobe.com/flex/mx";
global
{
	color:#191970;
	fontFamily:"微软雅黑";
	borderColor:#caff70;
	fontSize:20;
	borderWeight:3;
}
s|Panel
{
	backgroundColor:"#E066FF";
}
s|TextInput
{
	fontFamily:"微软雅黑";
	borderColor:#ffff00;
	fontSize:20;
}
.textInput
{
	fontFamily:"微软雅黑";
	borderColor:#ff0000;
	fontSize:20;
}
#t1
{
	color:"#00FFFF";
	fontFamily:"微软雅黑";
	borderColor:#0000ff;
	fontSize:20;
}

/* CSS file */
@namespace s "library://ns.adobe.com/flex/spark";
@namespace mx "library://ns.adobe.com/flex/mx";
global
{
	color:"#388E8E";
	fontFamily:"微软雅黑";
	borderColor:#caff70;
	fontSize:20;
	borderWeight:3;
}
s|Panel
{
	backgroundColor:"#00B2EE";
}
s|TextInput
{
	fontFamily:"微软雅黑";
	borderColor:#ffff00;
	fontSize:20;
}
.textInput
{
	fontFamily:"微软雅黑";
	borderColor:#ff0000;
	fontSize:20;
}
#t1
{
	color:"#6B8E23";
	fontFamily:"微软雅黑";
	borderColor:#0000ff;
	fontSize:20;
}