纯DIV+CSS百分比进度条实现如下（支持chrome、IE）
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<style>
body { font-size: 12px; }
#n { margin:10px auto; width:920px; border:1px solid #CCC;
font-size:14px; line-height:30px; }
#n a { padding:0 4px; color:#333 }
.Bar ,.Bars { position: relative; width: 200px;
/* 宽度 */ border: 1px solid #B1D632; padding: 1px; }
.Bar div,.Bars div { display: block; position: relative;
background:#00F;/* 进度条背景颜色 */ color: #333333;
height: 20px; /* 高度 */ line-height: 20px;
/* 必须和高度一致，文本才能垂直居中 */ }
.Bars div{ background:#090}
.Bar div span,.Bars div span { position: absolute; width: 200px;
/* 宽度 */ text-align: center; font-weight: bold; }
.cent{ margin:0 auto; width:300px; overflow:hidden}
</style>
</HEAD>
<BODY>
<div class="cent">
<p>
百分比进度条样式:
</p>
<p>
<div class="Bar">
<div style="width: 50%;">
<span>50%</span>
</div>
</div>
</p>
<p>
<div class="Bar">
<div style="width: 80%;">
<span>80%</span>
</div>
</div>
</p>
<p>
<div class="Bars">
<div style="width: 33%;">
<span>33%</span>
</div>
</div>
</p>
</div>
</BODY>
</HTML>
