<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>文件上传</title>
<link href="css/reset.css" rel="stylesheet" type="text/css">
<style type="text/css">
.wei_upload{ position:relative; border:1px solid #FFE6E6; overflow:hidden; background:#5DBB5D; display:inline-block; font-size:13px; margin:100px;padding:5px 10px; color:#fff; cursor:pointer;}
.wei_upload:hover{ background:#F9C;}
.wei_upload input{ opacity:0;filter:alpha(opacity=0); position:absolute; right:0; top:0; z-index:10;cursor:pointer; width:100px; height:100px; visibility:hidden;}
</style>
</head>
<body>
<span class="wei_upload" id="wei_upload">
<em>上传</em>
<input type="file" />
</span>
</body>
</html>
<script type="text/javascript">
window.onload=function(){
var o=document.getElementById("wei_upload");
var a=o.getElementsByTagName("input")[0];
o.onclick=function(){
a.click();
}
}
</script>
最近公司有一个项目，需要制作各种表单美化的效果，发现表单美化还真是不好玩，为什么不用原生的呢，原生的结构啊效率啊什么的都是杠杠的呀，不懂
只用css来美化的上传表单按钮（抄的迅雷的）,布布扣,bubuko.com
原文：http://www.cnblogs.com/busicu/p/3777184.html