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1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <style type="text/css"> 5 * 6 { 7 margin:0px; 8 padding:0px; 9 } 10 #a 11 { 12 height:40px; 13 width:120px; 14 background-color:#0F0; 15 top:80px; 16 left:200px; 17 position:absolute; 18 overflow:hidden; 19 text-align:center; 20 line-height:40px; 21 } 22 #b 23 { 24 height:90px; 25 width:120px; 26 left:0px; 27 top:40px; 28 background-color:#F00; 29 position:absolute; 30 } 31 table 32 { 33 height:120px; 34 width:120px; 35 border:0px; 36 text-align:center; 37 vertical-align:middle; 38 } 39 </style> 40 41 42 </head> 43 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 44 <title>隐藏导航练习</title> 45 </head> 46 47 <body> 48 <div id="a" onmouseover="over()" onmouseout="out()">新闻动态 49 <div id="b"> 50 <table cellpadding="0" cellspacing="0"> 51 <tr><td bgcolor="#00FF00">场景</td></tr> 52 <tr><td bgcolor="#FF0000">活动</td></tr> 53 <tr><td bgcolor="#0000FF">杂谈</td></tr> 54 </table> 55 <script> 56 function over() 57 { 58 var aa = document.getElementById(a); 59 a.setAttribute("style","overflow:visible;background-color:#3FC"); 60 } 61 function out() 62 { 63 var bb = document.getElementById(a); 64 a.setAttribute("style","overflow:hidden;background-color:#339"); 65 } 66 </script> 67 68 </div></div> 69 </body> 70 </html>
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原文地址：http://www.cnblogs.com/sihuiming/p/5080126.html
