as3 取页面参数

页面

 <div id="flashContent">
			<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" width="800" height="300" id="helloworld" align="middle">
				<param name="movie" value="helloworld.swf" />
				<param name="quality" value="high" />
				<param name="bgcolor" value="#ffffff" />
				<param name="play" value="true" />
				<param name="loop" value="true" />
				<param name="wmode" value="window" />
				<param name="scale" value="showall" />
				<param name="menu" value="true" />
				<param name="devicefont" value="false" />
				<param name="salign" value="" />
				<param name="allowScriptAccess" value="sameDomain" />
				<param name="FlashVars" value="myVarID=<?php echo $vid ?>" />
			 
				<!--[if !IE]>-->
				<object type="application/x-shockwave-flash" data="helloworld.swf" width="800" height="300">
					<param name="movie" value="helloworld.swf" />
					<param name="quality" value="high" />
					<param name="bgcolor" value="#ffffff" />
					<param name="play" value="true" />
					<param name="loop" value="true" />
					<param name="wmode" value="window" />
					<param name="scale" value="showall" />
					<param name="menu" value="true" />
					<param name="devicefont" value="false" />
					<param name="salign" value="" />
					<param name="allowScriptAccess" value="sameDomain" />
					<param name="FlashVars" value="myVarID=<?php echo $vid ?>" />
				<!--<![endif]-->
					<a href="http://www.adobe.com/go/getflash">
						<img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="获得 Adobe Flash Player" />
					</a>
				<!--[if !IE]>-->
				</object>
				<!--<![endif]-->
			</object>
		</div>

取参数方法

			//var testvid:String = root.loaderInfo.parameters.myVarID;//这样是取不到的
 
			var param:Object = root.loaderInfo.parameters;
			var testvid:string = param["myVarID"]; //这样正确