Jquery创建层显示标题和内容且随鼠标移动而移动

<script src="Core/Public/js/jquery.js" type="text/javascript"></script> //引入Jquery
<style type="text/css"> //编写创建的div的样式
#tooltip
{
position: absolute;
border: 1px #solid #333;
background: #f7f5d1;
padding: 1px;
color: #333;
display: none;
}
</style>
<script type="text/javascript"> //编写JS代码
$(function () {
var x = 10;
var y = 10;
$("a.tooltip").mouseover(function (e) { //当鼠标指针从元素上移入时
this.myTitle = this.title;
this.title = "";
var tooltip = "<div id='tooltip'>" + this.myTitle + "</div>";
$("body").append(tooltip);
$("#tooltip").css({ "top": (e.pageY + y) + "px", "left": (e.pageX + x) + "px" }).show("fast");
}).mouseout(function () { //当鼠标指针从元素上移开时
this.title = this.myTitle;
$("#tooltip").remove();
}).mousemove(function (e) { //当鼠标指针从元素上移动时
$("#tooltip").css({ "top": (e.pageY + y) + "px", "left": (e.pageX + x) + "px" });
});
});
</script>
//html代码
<ul>
<li><a href="#" class="tooltip" title="甜美宽松毛衣">1111111111111</a></li>
<li><a href="#" class="tooltip" title="是撒啊得瑟得">2222222222222</a></li>
</ul>