CSS定义鼠标悬浮，图片出现边框

友情链接用的CSS图片链接和文字链接样式

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<html>
<head>
<title>友情链接用的CSS图片链接和文字链接样式</title>
<style>
.f4{
width:100%;
 overflow:hidden;
 clear:both;
 margin:0;
 padding:0;
}
.f4 li{
 width:94px;
 height:37px;
 display:block;
 float:left;
 overflow:hidden;
 margin:10px 12px 2px 3px;
}
.f4 li a{
 width:88px;
 height:31px;
 overflow:hidden;
 float:left;
 border:3px solid #FFF;
}
.f4 li a:hover{
 border:3px solid #EEE;
}
.f5{
width:100%;
 overflow:hidden;
 clear:both;
 margin:0;
 padding:0;
}
.f5 li{
 float:left;
 line-height:14px;
 padding:0px 8px 0px;
 white-space:nowrap;
}
.f5 li a{
 color:#000;
 float:left;
}
</style>
</head>
<body>
<ul class="f4">
<li><a href='#' target='_blank'><img src='/jscss/demoimg/wall_s8.jpg' width='88' height='31' border='0'></a></li>
</ul>
<ul class="f5">
<li><a href='#' target='_blank'>天气查询网</a> </li>
</ul>
</body>
</html>