利用jQuery实现图片信息的浮动显示
如图： 
<html>
<head><meta charset="utf-8"/>
<style>
li{list-style:none;float:left;margin-right:10px;border:1px solid #AAAAAA}
#tooltip{position:absolute;}
</style>
<script type="text/javascript" src="./script/jquery-1.4.2.min.js"></script>
<script>
$(function(){
var x = 10;
var y = 20;
$("a.tooltip").hover(function(){
var title = this.title;
$("a.tooltip").attr("newTitle",this.title);
this.title = '';
var $div = $("<div id='newTip'><img src='"+this.href+"'/><br/>"+this.newTitle+"</div>");
$("body").append($div);
$div.css({"position":"absolute","background":"silver"}).show("fast");
},function(){
this.title = this.newTitle;
$("#newTip").remove();
}).mousemove(function(e){
var $div = $("#newTip").css({"left":(e.pageX+x)+'px',"top":(e.pageY+y)+'px'}).show("fast");
});
})
</script>
</head>
<body>
<ul>
<li><a href="images/apple_1_bigger.jpg" class="tooltip" title="苹果 iPod"><img src="images/apple_1.jpg" alt="苹果 iPod" /></a></li>
<li><a href="images/apple_2_bigger.jpg" class="tooltip" title="苹果 iPod nano"><img src="images/apple_2.jpg" alt="苹果 iPod nano"/></a></li>
<li><a href="images/apple_3_bigger.jpg" class="tooltip" title="苹果 iPhone"><img src="images/apple_3.jpg" alt="苹果 iPhone"/></a></li>
<li><a href="images/apple_4_bigger.jpg" class="tooltip" title="苹果 Mac"><img src="images/apple_4.jpg" alt="苹果 Mac"/></a></li>
</ul>
</body>
</html>