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" contenteditable="true"> </div>
????? </div>
??? </div>
? </div>
</div>
<input type="button" value="按钮" />
</body>
</html>