#jquery.scrolltop.js
用户网页上自动返回顶部的jquery插件
##使用说明
<!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>无标题文档</title>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/jquery.scrolltop.js"></script>
<script type="text/javascript">
$(function(){
$.scrolltop();
});
</script>
</head>
<body>
<div style="height:1000px;"></div>
</body>
</html>