代码：【复制】<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>下拉效果</title> <script type=text/javascript> function $(d){ return document.getElementById(d); } // set or get the current display style of the div function dsp(d,v){ if(v==undefined){ return d.style.display; }else{ d.style.display=v; } } // set or get the height of a div. function sh(d,v){ // if you are getting the height then display must be block to return the absolute height if(v==undefined){ if(dsp(d)!='none'&& dsp(d)!=''){ return d.offsetHeight; } viz = d.style.visibility; d.style.visibility = 'hidden'; o = dsp(d); dsp(d,'block'); r = parseInt(d.offsetHeight); dsp(d,o); d.style.visibility = viz; return r; }else{ d.style.height=v; } } /* * Variable 'S' defines the speed of the accordian * Variable 'T' defines the refresh rate of the accordian */ s=7; t=10; //Collapse Timer is triggered as a setInterval to reduce the height of the div exponentially. function ct(d){ d = $(d); if(sh(d)>0){ v = Math.round(sh(d)/d.s); v = (v<1) ? 1 :v ; v = (sh(d)-v); sh(d,v+'px'); d.style.opacity = (v/d.maxh); d.style.filter= 'alpha(opacity='+(v*100/d.maxh)+');'; }else{ sh(d,0); dsp(d,'none'); clearInterval(d.t); } } //Expand Timer is triggered as a setInterval to increase the height of the div exponentially. function et(d){ d = $(d); if(sh(d)<d.maxh){ v = Math.round((d.maxh-sh(d))/d.s); v = (v<1) ? 1 :v ; v = (sh(d)+v); sh(d,v+'px'); d.style.opacity = (v/d.maxh); d.style.filter= 'alpha(opacity='+(v*100/d.maxh)+');'; }else{ sh(d,d.maxh); clearInterval(d.t); } } // Collapse Initializer function cl(d){ if(dsp(d)=='block'){ clearInterval(d.t); d.t=setInterval('ct("'+d.id+'")',t); } } //Expand Initializer function ex(d){ if(dsp(d)=='none'){ dsp(d,'block'); d.style.height='0px'; clearInterval(d.t); d.t=setInterval('et("'+d.id+'")',t); } } // Removes Classname from the given div. function cc(n,v){ s=n.className.split(/\s+/); for(p=0;p<s.length;p++){ if(s[p]==v+n.tc){ s.splice(p,1); n.className=s.join(' '); break; } } } //Accordian Initializer function Accordian(d,s,tc){ // get all the elements that have id as content l=$(d).getElementsByTagName('div'); c=[]; for(i=0;i<l.length;i++){ h=l[i].id; if(h.substr(h.indexOf('-')+1,h.length)=='content'){c.push(h);} } sel=null; //then search through headers for(i=0;i<l.length;i++){ h=l[i].id; if(h.substr(h.indexOf('-')+1,h.length)=='header'){ d=$(h.substr(0,h.indexOf('-'))+'-content'); d.style.display='none'; d.style.overflow='hidden'; d.maxh =sh(d); d.s=(s==undefined)? 7 : s; h=$(h); h.tc=tc; h.c=c; // set the onclick function for each header. h.onclick = function(){ for(i=0;i<this.c.length;i++){ cn=this.c[i]; n=cn.substr(0,cn.indexOf('-')); if((n+'-header')==this.id){ ex($(n+'-content')); n=$(n+'-header'); cc(n,'__'); n.className=n.className+' '+n.tc; }else{ cl($(n+'-content')); cc($(n+'-header'),''); } } } if(h.className.match(/selected+/)!=undefined){ sel=h;} } } if(sel!=undefined){sel.onClick();} } </script> <style type="text/css"> <!-- body{ font-size: 12px; color: #999999; background-color: #000000; font-family: Arial, Helvetica, sans-serif; text-transform: capitalize; } * { margin: 0px; padding: 0px; border: 0px;list-style:none;} /*菜单样式*/ #basic-accordian{ width:20%; z-index:2; margin-top: 2%; border-top-style: solid; border-top-color: #999999; border-bottom-style: solid; border-bottom-color: #666666; padding-top: 15px; padding-bottom: 15px; margin-bottom: 2%; }/*菜单背景*/ .accordion_headings{ padding:2px; color:#FFFFFF; cursor:pointer; font-weight:bold; font-size: 14px; line-height: 25px; letter-spacing: 1px; }/*菜单分类行*/ .accordion_headings:hover{ } .accordion_child{ padding-left: 20px; padding-bottom: 8px; } .accordion_child ul{} .accordion_child ul li{ font-size: 12px; display: block; line-height: 20px; display:block; } .accordion_child ul li a{ text-decoration: none; color: #666666; } .accordion_child ul li a:hover{ color: #FFFFFF; } .header_highlight{ background-color: #000000; color: #FF0099; }/*当前显示菜单分类样式*/ /*菜单样式结束*/ .main { margin-top: 2%; width: 96%; margin-right: auto; margin-left: auto; } /*特殊样式-------------------------*/ --> </style> <script type="text/javascript" src="js/menu.js"></script> </head> <body onload="new Accordian('basic-accordian',5,'header_highlight');"> <div class="main"> <div id="basic-accordian" ><!--菜单开始--> <div id="test-header" class="accordion_headings" >水平网</div><!--1新闻资讯--> <div id="test-content"> <div class="accordion_child"> <ul><li><a href="http://goalercn.com">JS特效</a></li> <li><a href="http://goalercn.com">站长工具</a></li> </ul> </div> </div> <div id="test1-header" class="accordion_headings" >学院概况</div><!--2学院概况--> <div id="test1-content"> <div class="accordion_child"> <ul><li><a href="http://goalercn.com">源码下载</a></li> <li><a href="http://goalercn.com">酷站欣赏</a></li> <li><a href="#">教学设施</a></li> <li><a href="#">刘晓阳校长介绍</a></li> <li><a href="#">优良师资</a></li> <li><a href="#">资质认证与荣誉</a></li> </ul> </div></div> <div id="test2-header" class="accordion_headings" >专业设置</div> <!--3课程设置--> <div id="test2-content"> <div class="accordion_child"> <ul> <li><a href="#">形象设计 (大学专科)</a></li> <li><a href="#">化妆造型</a></li> <li><a href="#">美容</a></li> <li><a href="#">美发</a></li> <li><a href="#">美甲</a></li> </ul></div></div> <div id="test3-header" class="accordion_headings" >国际文凭课程</div><!--4国际文凭课程--> <div id="test3-content"> <div class="accordion_child"> <ul><li><a href="#">cidesco圣迪斯哥</a></li> <li><a href="#">city & gulids国际美容师</a></li> <li><a href="#">cibtac国际美容师</a></li> <li><a href="#">srh国际发型师</a></li> <li><a href="#">itec国际专业时装、舞台、媒体化妆师</a></li> </ul></div></div> <div id="test4-header" class="accordion_headings" >师生经典作品</div> <!--5作品赏析--> <div id="test4-content"> <div class="accordion_child"> <ul> <li><a href="#">形象设计</a></li> <li><a href="#">化妆造型</a></li> <li><a href="#">美容</a></li> <li><a href="#">美发</a></li> <li><a href="#">美甲</a></li> </ul> </div></div> <div id="test5-header" class="accordion_headings" >在线视频</div><!--6学校视频--> <div id="test5-content"> <div class="accordion_child"> <ul> <li><a href="#">学院介绍视频</a></li> <li><a href="#">活动视频</a></li> <li><a href="#">考试现场视频</a></li> </ul> </div></div> <div id="test6-header" class="accordion_headings" >蒙妮坦精英学员</div><!--7招生信息--> <div id="test6-content"> <div class="accordion_child"> <ul> <li><a href="#">各专业优秀学员</a></li> <li><a href="#">形象设计大学专科毕业生</a></li> <li><a href="#">cidesco美容博士人才</a></li> <li><a href="#">作育英才时代见证(1981-2000年)</a></li> </ul> </div></div> <div id="test7-header" class="accordion_headings" >招生信息</div><!--8招生信息--> <div id="test7-content"> <div class="accordion_child"> <ul> <li><a href="#">2008年招生简章</a></li> <li><a href="#">报名方式</a></li> <li><a href="#">报名须知</a></li> <li><a href="#">在线报名</a></li> </ul> </div></div> <div id="test8-header" class="accordion_headings" >咨询留言</div><!--8在线咨询--> <div id="test8-content"> <div class="accordion_child"> <ul> <li><a href="#">常见问题</a></li> <li><a href="#">在线留言</a></li> <li><a href="#">联系我们</a></li> </ul> </div></div> </div><!--菜单结束--> </div><!--main结束--> </body> </html>