png图片在ie6中灰色背景终极解决方案

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.reset_pass_con_icon{         width:55px; height:60px;         background-image:url(../images/icon/reset_pass.png)!important;/* FF IE7 */          background-repeat: no-repeat;         _filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../images/icon/reset_pass.png'); /* IE6 */         _ background-image: none; /* IE6 */ }

?注意：1.!important要加载background-image后面保证火狐浏览器显示
????????? 2._filter中的路径用相对路径