CSS+JS实现兼容性很好的无限级下拉菜单 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> 
<head> 
<title>CSS+JS实现兼容性很好的无限级下拉菜单</title> 
<style type="text/css"> 
*{ margin:0; padding:0; border:0;} 
body{font:12px/130% verdana,geneva,arial,helvetica,sans-serif,宋体;}li{list-style:none;} 
.clearfix:after{content:" ";display:block;height:0;clear:both;visibility:hidden;}.clearfix{display:inline-block;} 
a:link{ color:#000; text-decoration:none; } 
a:visited{ color:#000; text-decoration:none; } 
a:hover{ color:#000; text-decoration:none; } 
.menu{ width:778px; height:26px; background:#fff; margin:0 auto;} 
.menusel{ float:left;width:100px; position:relative; height:25px; background:#ddd; line-height: 25px; margin-left: 1px; *margin-left: 0px;_margin-left: -1px;} 
.menusel h2{ font-size:12px; } 
.menusel a{ display: block;text-align:center; width:100px;border:1px solid #a4a4a4; height:25px; border-bottom:1px solid #a4a4a4; position:relative; z-index:2;} 
.menusel a:hover{ border:1px solid #a4a4a4; border-bottom:1px dashed #eeeeee; position:relative; z-index:2; height:25px;} 
.ahover a{border-bottom:1px dashed #eeeeee; background:#eeeeee; } 
.position{ position:absolute; z-index:1;} 
.menusel ul{width:125px; background:#eee; border:1px solid #a4a4a4; margin-top: -1px; position:relative; z-index:1; display:none;} 
.menusel .block{ display:block;} 
.typeul li{border-bottom:1px dashed #a4a4a4;width:125px; position:relative; float:left; } 
.typeul li a{ border:none;width:125px; } 
.typeul li a:hover{ border:none; background:#ddd;} 
.typeul{  margin-left:0;  } 
.typeul ul{left:125px; top:0; position:absolute;} 
.fli{ margin-left: -1px; border-left:#eeeeee solid 1px;} 
.menusel .lli{ border:none; } 
</style> 
<script type="text/javascript">document.execCommand("BackgroundImageCache", false, true);</script><!-- IE6背景图片闪烁问题  --> 
</head> 
<body> 
<div class="menu"> 
 <div id="menu1" class="menusel"> 
  <h2><a href="/">菜单1</a></h2> 
   <div class="position"> 
    <ul class="clearfix typeul"> 
     <li><a href="http://www.33567.cn">菜单选项1-2</a></li> 
     <li> 
      <a href="#">菜单选项1-2</a> 
      <ul> 
       <li class="fli"><a href="#">菜单选项1-2-1</a></li> 
       <li class="lli"><a href="#">菜单选项1-2-2</a></li> 
      </ul> 
     </li> 
     <li><a href="http://www.7caidy.com">菜单选项1-2</a></li> 
     <li class="lli"><a href="#">菜单选项1-2</a></li> 
    </ul> 
   </div><!-- position --> 
  </div><!-- menusel --> 
  <div id="menu2" class="menusel"> 
  <h2><a href="#">菜单2</a></h2> 
  <div class="position"> 
  <ul class="clearfix typeul"> 
  <li><a href="#">菜单选项2-2</a></li> 
  <li><a href="#">菜单选项2-2</a> 
  <ul> 
  <li class="fli"><a href="#">菜单选项2-2-1</a></li> 
  <li class="lli"><a href="#">菜单选项2-2-2</a> 
  <ul> 
  <li class="fli"><a href="#">菜单选项2-2-1</a></li> 
  <li class="lli"><a href="#">菜单选项2-2-2</a> 
  </li> 
  </ul> 
  </li> 
  </ul> 
  </li> 
  <li><a href="#">菜单选项2-2</a></li> 
  <li class="lli"><a href="#">菜单选项2-2</a></li> 
  </ul> 
  </div><!-- position --> 
  </div><!-- menusel --> 
  <div id="menu3" class="menusel"> 
  <h2><a href="#">菜单3</a></h2> 
  <div class="position"> 
  <ul class="clearfix typeul"> 
  <li><a href="#">菜单选项3-2</a></li> 
  <li><a href="#">菜单选项3-2</a> 
  <ul> 
  <li class="fli"><a href="#">菜单选项3-2-1</a></li> 
  <li class="lli"><a href="#">菜单选项3-2-2</a> 
  <ul> 
  <li class="fli"><a href="#">菜单选项3-2-1</a></li> 
  <li class="lli"><a href="#">菜单选项3-2-2</a> 
  <ul> 
  <li class="fli"><a href="#">菜单选项3-2-1</a></li> 
  <li class="lli"><a href="#">菜单选项3-2-2</a></li> 
  </ul> 
  </li> 
  </ul> 
  </li> 
  </ul> 
  </li> 
  <li><a href="#">菜单选项3-2</a></li> 
  <li class="lli"><a href="#">菜单选项3-2</a></li> 
  </ul> 
  </div><!-- position --> 
 </div><!-- menusel --> 
</div><!-- menu --> 
 <script type="text/javascript"> 
 for(var x = 1; x < 4; x++) 
 { 
 var menuid = document.getElementById("menu"+x); 
 menuid.num = x; 
 type(); 
 } 
 function type() 
 { 
 var menuh2 = menuid.getElementsByTagName("h2"); 
 var menuul = menuid.getElementsByTagName("ul"); 
 var menuli = menuul[0].getElementsByTagName("li"); 
 menuh2[0].onmouseover = show; 
 menuh2[0].onmouseout = unshow; 
 menuul[0].onmouseover = show; 
 menuul[0].onmouseout = unshow; 
 function show() 
 { 
 menuul[0].className = "clearfix typeul block" 
 } 
 function unshow() 
 { 
 menuul[0].className = "typeul" 
 } 
 for(var i = 0; i < menuli.length; i++) 
  { 
  menuli[i].num = i; 
  var liul = menuli[i].getElementsByTagName("ul")[0]; 
   if(liul) 
   { 
   typeshow() 
   } 
  } 
 function typeshow() 
 { 
 menuli[i].onmouseover = showul; 
 menuli[i].onmouseout = unshowul; 
 } 
 function showul() 
 { 
 menuli[this.num].getElementsByTagName("ul")[0].className = "block"; 
 } 
 function unshowul() 
 { 
 menuli[this.num].getElementsByTagName("ul")[0].className = ""; 
 } 
 } 
 </script> 
</body> 
</html>

 

 

本文出自 “阿凡达” 博客，请务必保留此出处http://shamrock.blog.51cto.com/2079212/815559

posted @ 2014-08-10 10:05  商商-77  阅读(275)  评论(0)  编辑  收藏  举报