<html>
<head>
<style type="text/css">
div
{
border:thin solid green;
width:100px;
height:100px;
}
</style>
<script type="text/javascript">
function hideOverflow()
{
document.getElementById("div1").style.overflow="hidden";
}
</script>
</head>
<body>
<div id="div1">
This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text.
This is some text. This is some text. This is some text.
</div>
<br />
<input type="button" onclick="hideOverflow()" value="Hide overflow" />
</body>
</html>
原文：http://www.cnblogs.com/synqqt/p/5921144.html