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<title>www.webjx.com</title>
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function high(which2){
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function low(which2){
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h1 {text-align:center;margin-top:50px;}
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margin:0px;
display:block;
position: relative;
border:1px solid #ccc;
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#outer a:hover {border:1px dashed #c00;}
#outer img {display:block;border:none;background:#069;}
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<body>
<h1>将鼠标移至图片，将看到此效果。</h1>
<p id="outer"><a href="http://www.cnwebshow.com"> <img onMouseOut=low(this) onMouseOver=high(this) style='FILTER: alpha(opacity=20)' src="http://www.cnwebshow.com/images/logo.gif" alt="www.cnwebshow.com" width="200" height="90" /></a>
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