div模拟textarea以实现高度自适应(去掉默认的@ mailto)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>div模拟textarea</title>
<link rel="stylesheet" href="../css/demo.css" type="text/css" />
<link rel="stylesheet" href="../css/hl.css" type="text/css" />
<style>
.test_box p {
 margin:0;
}
.test_box {
 width:400px;
 min-height:120px;
 _height:120px;
 max-height:300px;
 margin-left:auto;
 margin-right:auto;
 padding:3px;
 outline:0;
 border:1px solid #a0b3d6;
 font-size:12px;
 word-wrap:break-word;
 overflow-x:hidden;
 overflow-y:auto;
 _overflow-y:visible;
}
.test_box a {
 text-decoration:none;
 color:#000;
}
.test_box:focus {
 -moz-box-shadow:0 0 6px rgba(0, 100, 255, .45);
 -webkit-box-shadow:0 0 6px rgba(0, 100, 255, .45);
 box-shadow:0 0 6px rgba(0, 100, 255, .45);
 border-color:#34538b;
}
</style>
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(function(){    
     $(".test_box").keyup(function(){$(this).html($(this).text())})    
     $(".aa").click(function(){alert($(".test_box").html())})   
     })
</script>
</head>
<body>
<div id="main">
  <h1>div模拟textarea以实现高度自适应实例页面</h1>
  <div id="body" class="light">
    <div id="content" class="show">
      <div class="demo">
        <div id="testBox" class="test_box" contenteditable="true"> </div>
      </div>
    </div>
  </div>
</div>
<input type="button" value="按钮" class="aa" />
</body>
</html>

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