<style>
.mycls{
width: 48px;
height: 48px;
background: url(20090318230119136.png) no-repeat left top;
_background: none;
_filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale,src="20090318230119136.png");
}
</style>
<body bgcolor="#CCCCCC">
<div class="mycls"></div>
</body>
原文：http://www.cnblogs.com/eketeam/p/3976608.html