<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>用戶名：<input type="text" /></div>     <div>密碼：<input type="text" /></div>     <div>年齡：<input type="text" /></div>     <div>備注：<input type="text" /></div>     <div><input type="button" value="保存" /></div>   </div>