如何做导航的那种效果？！求教！_html/css_WEB-ITnose

<div  id="test">offset</div><div id="title">Hello World.</div>

$(function() {$("#test").bind({"mouseenter": function(e) {      $("#title").css("left",e.pageX).css("top",e.pageY).show();},"mouseout": function(e) {        $("#title").hide();}});});

     #title {    width:100px;    height:100px;    display:none;    position:absolute;    background-color:red;    }#test {    	position:absolute;    text-align:center;    left:20%;     top:20%;    right:50%;    bottom:50%;    background-color:gray;    border: 1px solid ;}