flex控件鼠标移动前后样式

?<s:VGroup? gap="5" horizontalAlign="center" verticalAlign="middle" >
??????<s:Image buttonMode="true"? click="Position_clickHandler(event)"? rollOver="imgleft_rollOverHandler(event);" rollOut="img1_rollOutHandler(event);" source="assets/cross_cursor.png"/>
??????<s:Label text="定位" buttonMode="true"/>
?????</s:VGroup>?
?????
?????<s:VGroup? gap="5" horizontalAlign="center" verticalAlign="middle" >
??????<s:Image? width="20" height="20" buttonMode="true"? click="Full_clickHandler(event)"? rollOver="imgleft_rollOverHandler(event);" rollOut="img1_rollOutHandler(event);" source="assets/map-service.png"/>
??????<s:Label text="全图" buttonMode="true"/>
?????</s:VGroup>

?

protected function img1_rollOutHandler(evt:MouseEvent):void { ????evt.currentTarget.filters = []; ???} ??? ???protected function imgleft_rollOverHandler(evt:MouseEvent):void { ????evt.currentTarget.filters = [new GlowFilter(0xffffff,0.6)]; ????var img:spark.components.Image=evt.currentTarget as spark.components.Image;???? ???}