js超漂亮的鼠标提示，带人性化缺口

<!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 http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>鼠标提示符</title> 
<style> 
* { padding: 0; margin: 0; } 
li { } 
body { background: #fdf7f7; }

#explain { height: 60px; border-bottom: 1px solid #999999; background: #eee; font-size: 14px; color: #666; text-align: center; line-height: 60px; } 
#explain a { color: #990000; font-weight: bold; text-decoration: none; border-bottom: 1px dotted #990000; } 
#explain a:hover { border-bottom: 2px solid #990000; } 
#explain strong { color: #990000; } 
ul { width: 716px; position: absolute; top: 260px; left: 50%; margin-left: -358px; } 
li { width: 160px; height: 100px; list-style: none; background: #fff; padding: 3px; border-top: 1px solid #ddd; border-right: 2px solid #ddd; border-bottom: 2px solid #ddd; border-left: 1px solid #ddd; float: left; margin-right: 10px; cursor: pointer; } 
img { float: left; } 
#topic { width: 270px; background: #fff; padding: 3px; border-top: 1px solid #ddd; border-right: 2px solid #ddd; border-bottom: 2px solid #ddd; border-left: 1px solid #ddd; position: absolute; top: 100px; left: 200px; } 
#topic .adorn { width: 7px; height: 11px; overflow: hidden; background: url(/upload/201011/20101103150729602.gif); position: absolute; bottom: 15px; left: -7px; } 
#topic .adorn_r { width: 7px; height: 11px; overflow: hidden; background: url(/upload/201011/20101103150729137.gif); position: absolute; bottom: 15px; right: -7px; } 
#topic .inner_html { padding: 10px; line-height: 20px; font-size: 12px; color: #666; text-indent: 24px; font-family: arial; } 
#topic .inner_html a { color: #990000; font-weight: bold; text-decoration: none; border-bottom: 1px dotted #990000; } 
#topic .inner_html a:hover { border-bottom: 2px solid #990000; } 
</style> 
<script type="text/javascript"> 
var g_aData= 
[ 
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];

var g_oTimerHide=null;

window.onload=function () 
{ 
var aLi=document.getElementById('content').getElementsByTagName('li');

bindTopic(aLi); 
};

function bindTopic(aElement) 
{ 
var i=0;

for(i=0;iiPageRight) 
{ 
bRight=false;

l=x-(oTopic.offsetWidth+20); 
oTopic.getElementsByTagName('div')[0].className='adorn_r'; 
} 
else 
{ 
oTopic.getElementsByTagName('div')[0].className='adorn'; 
}

oTopic.style.left=l+'px'; 
oTopic.style.top=t+'px'; 
} 
</ script> 
</head>

<body> 
<div id="explain">可以调整窗口大小，再把鼠标移到图片上查看……</div> 
<div id="topic" style="display: none; z-index:2"> 
<div class="adorn"></div> 
<div class="inner_html"></div> 
</div>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

js超漂亮的鼠标提示，带人性化缺口_布局与层