兼容各浏览器的 input type=file 文件域美化

.fileInput{width:102px;height:34px; background:url(http://images.cnblogs.com/cnblogs_com/dreamback/upFileBtn.png);overflow:hidden;position:relative;}
.upfile{position:absolute;top:-100px;}
.upFileBtn{width:102px;height:34px;opacity:0;filter:alpha(opacity=0);cursor:pointer;}
 HTML:

HTML:

CSS:
.opacity {opacity:0;FILTER:Alpha(Opacity=0);}
.text {border: 1px solid #c0c1b3;}
.text.opacity {position:absolute;height:20px;}
.text.file {width:129px!important;width:135px;z-index:100;}
.text.file_btn {height:19px;margin:0 0 -1px 0;width:auto!important;width:60px;background:#f0f0f0;padding:;}