PNG 背景透明图片CSS写法

 .cfooter {width:128px;height:22px;background:url(http://www.028studio.com/img/leftbt.png) left top no-repeat !important; /*For Firefox*/
  *background:none;/*For IE7 & IE6*/_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='http://www.028studio.com/img/leftbt.png',sizingMethod='crop');}