<!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>我要置顶</title>
</head>
<script>
    function getAnchor()
    {
            window.location.hash = 'topOne';
            window.location.hash = 'topTwo';
    }
</script>
<body>
 <a name="top"id="topOne"></a>
 <a name="top"id="topTwo"></a>
 置顶位置
 <div style="margin-top:1200px;">&nbsp;</div>
    
  <a href="javascript:void(0);" onclick="getAnchor()">我要置顶</a>
</body>
</body>
</html>