CSS+JS实现兼容性很好的无限级下拉菜单代码,Css代码库,德仔网

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【Css】 CSS+JS实现兼容性很好的无限级下拉菜单
作者:Dezai.CN / 发布于2012/4/1/ 618
在IE8下测试没问题，其他没测，请测试后决定是否使用
<div><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"></div>
<div><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"></div>
<div><head></div>
<div><title>CSS+JS实现兼容性很好的无限级下拉菜单</title></div>
<div><style type="text/css"></div>
<div>*{ margin:0; padding:0; border:0;}
<div>body{font:12px/130% verdana,geneva,arial,helvetica,sans-serif,宋体;}li{list-style:none;}
<div>.clearfix:after{content:" ";display:block;height:0;clear:both;visibility:hidden;}.clearfix{display:inline-block;}
<div>a:link{ color:#000; text-decoration:none; }
<div>a:visited{ color:#000; text-decoration:none; }
<div>a:hover{ color:#000; text-decoration:none; }
<div>.menu{ width:778px; height:26px; background:#fff; margin:0 auto;}
<div>.menusel{ float:left;width:100px; position:relative; height:25px; background:#ddd; line-height: 25px; margin-left: 1px; *margin-left: 0px;_margin-left: -1px;}
<div>.menusel h2{ font-size:12px; }
<div>.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;}
<div>.menusel a:hover{ border:1px solid #a4a4a4; border-bottom:1px dashed #eeeeee; position:relative; z-index:2; height:25px;}
<div>.ahover a{border-bottom:1px dashed #eeeeee; background:#eeeeee; }
<div>.position{ position:absolute; z-index:1;}
<div>.menusel ul{width:125px; background:#eee; border:1px solid #a4a4a4; margin-top: -1px; position:relative; z-index:1; display:none;}
<div>.menusel .block{ display:block;}
<div>.typeul li{border-bottom:1px dashed #a4a4a4;width:125px; position:relative; float:left; }
<div>.typeul li a{ border:none;width:125px; }
<div>.typeul li a:hover{ border:none; background:#ddd;}
<div>.typeul{ margin-left:0; }
<div>.typeul ul{left:125px; top:0; position:absolute;}
<div>.fli{ margin-left: -1px; border-left:#eeeeee solid 1px;}
<div>.menusel .lli{ border:none; }
<div></style></div>
<div><script type="text/javascript">document.execCommand("BackgroundImageCache", false, true);</script><!-- IE6背景图片闪烁问题 --></div>
<div></head></div>
<div><body></div>
<div><div class="menu"></div>
<div><div id="menu1" class="menusel"></div>
<div> <h2><a href="/">菜单1</a></h2></div>
<div> <div class="position"></div>
<div>  <ul class="clearfix typeul"></div>
<div>  <li><a href="http://www.33567.cn">菜单选项1-2</a></li></div>
<div>  <li></div>
<div>   <a href="#">菜单选项1-2</a></div>
<div>   <ul></div>
<div>   <li class="fli"><a href="#">菜单选项1-2-1</a></li></div>
<div>   <li class="lli"><a href="#">菜单选项1-2-2</a></li></div>
<div>   </ul></div>
<div>  </li></div>
<div>  <li><a href="http://www.7caidy.com">菜单选项1-2</a></li></div>
<div>  <li class="lli"><a href="#">菜单选项1-2</a></li></div>
<div>  </ul></div>
<div> </div><!-- position --></div>
<div> </div><!-- menusel --></div>
<div> <div id="menu2" class="menusel"></div>
<div> <h2><a href="#">菜单2</a></h2></div>
<div> <div class="position"></div>
<div> <ul class="clearfix typeul"></div>
<div> <li><a href="#">菜单选项2-2</a></li></div>
<div> <li><a href="#">菜单选项2-2</a></div>
<div> <ul></div>
<div> <li class="fli"><a href="#">菜单选项2-2-1</a></li></div>
<div> <li class="lli"><a href="#">菜单选项2-2-2</a></div>
<div> <ul></div>
<div> <li class="fli"><a href="#">菜单选项2-2-1</a></li></div>
<div> <li class="lli"><a href="#">菜单选项2-2-2</a></div>
<div> </li></div>
<div> </ul></div>
<div> </li></div>
<div> </ul></div>
<div> </li></div>
<div> <li><a href="#">菜单选项2-2</a></li></div>
<div> <li class="lli"><a href="#">菜单选项2-2</a></li></div>
<div> </ul></div>
<div> </div><!-- position --></div>
<div> </div><!-- menusel --></div>
<div> <div id="menu3" class="menusel"></div>
<div> <h2><a href="#">菜单3</a></h2></div>
<div> <div class="position"></div>
<div> <ul class="clearfix typeul"></div>
<div> <li><a href="#">菜单选项3-2</a></li></div>
<div> <li><a href="#">菜单选项3-2</a></div>
<div> <ul></div>
<div> <li class="fli"><a href="#">菜单选项3-2-1</a></li></div>
<div> <li class="lli"><a href="#">菜单选项3-2-2</a></div>
<div> <ul></div>
<div> <li class="fli"><a href="#">菜单选项3-2-1</a></li></div>
<div> <li class="lli"><a href="#">菜单选项3-2-2</a></div>
<div> <ul></div>
<div> <li class="fli"><a href="#">菜单选项3-2-1</a></li></div>
<div> <li class="lli"><a href="#">菜单选项3-2-2</a></li></div>
<div> </ul></div>
<div> </li></div>
<div> </ul></div>
<div> </li></div>
<div> </ul></div>
<div> </li></div>
<div> <li><a href="#">菜单选项3-2</a></li></div>
<div> <li class="lli"><a href="#">菜单选项3-2</a></li></div>
<div> </ul></div>
<div> </div><!-- position --></div>
<div></div><!-- menusel --></div>
<div></div><!-- menu --></div>
<div><script type="text/javascript"></div>
<div>for(var x = 1; x < 4; x++)</div>
<div>{</div>
<div>var menuid = document.getElementById("menu"+x);</div>
<div>menuid.num = x;</div>
<div>type();</div>
<div>}
<div>function type()</div>
<div>{</div>
<div>var menuh2 = menuid.getElementsByTagName("h2");</div>
<div>var menuul = menuid.getElementsByTagName("ul");</div>
<div>var menuli = menuul[0].getElementsByTagName("li");</div>
<div>menuh2[0].onmouseover = show;</div>
<div>menuh2[0].onmouseout = unshow;</div>
<div>menuul[0].onmouseover = show;</div>
<div>menuul[0].onmouseout = unshow;</div>
<div>function show()</div>
<div>{</div>
<div>menuul[0].className = "clearfix typeul block"</div>
<div>}
<div>function unshow()</div>
<div>{</div>
<div>menuul[0].className = "typeul"</div>
<div>}
<div>for(var i = 0; i < menuli.length; i++)</div>
<div> {</div>
<div> menuli[i].num = i;</div>
<div> var liul = menuli[i].getElementsByTagName("ul")[0];</div>
<div> if(liul)</div>
<div> {</div>
<div> typeshow()</div>
<div> }
<div> }
<div>function typeshow()</div>
<div>{</div>
<div>menuli[i].onmouseover = showul;</div>
<div>menuli[i].onmouseout = unshowul;</div>
<div>}
<div>function showul()</div>
<div>{</div>
<div>menuli[this.num].getElementsByTagName("ul")[0].className = "block";</div>
<div>}
<div>function unshowul()</div>
<div>{</div>
<div>menuli[this.num].getElementsByTagName("ul")[0].className = "";</div>
<div>}
<div>}
<div></script></div>
<div></body></div>
<div></html></div>
<div></div>
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　无限级下拉菜单　
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