效果：
CODE:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type" /> <title>无标题 1</title> <script type="text/javascript" src="jquery-1.11.0.js/jquery-1.11.0.js"></script> <style type="text/css"> body{ margin:0; padding:40px; background:#fff; font:80% Arial, Helvetica, sans-serif; color:#555; line-height:180%; } img{border:none;} ul,li{ margin:0; padding:0; } li{ list-style:none; float:left; display:inline; margin-right:10px; border:1px solid #AAAAAA; } #tooltip{ position:absolute; border:1px solid #333; background:#f7f5d1; padding:1px; color:#333; display:none; } </style> <script type="text/javascript"> var x = 10; var y = 20; $(function(){ $("a.tooltip").mouseover(function(e){ //取得title值 this.mytitle = this.title; this.title = ""; var imgtitle = this.mytitle? "<br />" + this.mytitle : ""; //创建<div>元素 var tooltip = "<div id='tooltip'><img src='" + this.href + "' alt='产品预览图' />" + imgtitle + "</div>"; $("body").append(tooltip);//将它追加到文档中 $("#tooltip") .css({ "top":(e.pageY+y) + "px", "left":(e.pageX+x) + "px" }).show("fast");//设置x坐标和y坐标，并显示 }).mouseout(function(){ $("#tooltip").remove();//移除 this.title = this.mytitle;//恢复title }).mousemove(function(e){ $("#tooltip") .css({ "top":(e.pageY+y) + "px", "left":(e.pageX+x) + "px" }); }); }); </script> </head> <body> <ul> <li><a href="apple1.jpg" class="tooltip" title="苹果 iPod"><img src="apple1.jpg" alt="苹果 iPod" /></a></li> <li><a href="apple2.jpg" class="tooltip" title="苹果 nano"><img src="apple2.jpg" alt="苹果 nano" /></a></li> <li><a href="apple3.jpg" class="tooltip" title="苹果 iPhone"><img src="apple3.jpg" alt="苹果 iPhone" /></a></li> </ul> </body> </html>