<script type="text/javascript" src="Js/jquery-1.7.2.min.js"></script> 
  <script type="text/javascript"> 
    $(function() { 
      $(window).scroll(function() { 
        var top = $(window).scrollTop()+200; 
        var left= $(window).scrollLeft()+320; 
        $("#editInfo").css({ left:left + "px", top: top + "px" }); 
      }); 
    }); 
  </script> 
 
  <div id="editInfo" style="float:left;width:300px;background-color:#ccc;position:absolute;top:200px;"> 
    <div>用户名：<input type="text" /></div> 
    <div>密码：<input type="text" /></div> 
    <div>年龄：<input type="text" /></div> 
    <div>备注：<input type="text" /></div> 
    <div><input type="button" value="保存" /></div> 
  </div>