var Nav={
nav_1 : "
公司简介企业理念董事长致辞",
nav_2 : "企业文化项目企业文化列表",
nav_4 : "最新资讯行业新闻推荐新闻公司动态",
nav_5 : "生物工程化学工程暖通工程其他工程化工类石油化工类制药类电力类长输管线建筑工程市政公用工程冶金类",
nav_8 : "人才策略诚聘英才",
defaultAlpha : 80,
Amount : 10,
Delay : 30,
show : function(e,nID){
var obj=e;
if(!eval("this.nav_"+nID)) return;
if(!$("Nav_"+nID)){
this.createNav(obj,nID);
//obj.className="currNav";
}
if(obj){
$("Nav_"+nID).style.top=getTop(obj)+obj.offsetHeight+"px";
$("Nav_"+nID).style.left=getLeft(obj)-$("Nav_"+nID).offsetWidth/2-1+"px";
this.showIt(nID);
}else{
$("Nav_"+nID).filters.alpha.opacity=this.defaultAlpha;
}
$("Nav").getElementsByTagName("li")[nID].getElementsByTagName("a")[0].className="a_hover"
showObj("Nav_"+nID)
},
createNav : function(obj,nID){
var nav=document.createElement("ul");
nav.setAttribute("id","Nav_"+nID);
nav.setAttribute("className","Nav_Child");
nav.attachEvent("onmouseover",function(){Nav.show(null,nID)})
nav.attachEvent("onmouseout",function(){Nav.hiddenNav(nID)})
nav.innerHTML=eval("this.nav_"+nID);
document.body.insertBefore(nav);
},
hiddenNav : function(nID){
if($("Nav_"+nID)){
$("Nav_"+nID).filters.alpha.opacity=0;
hiddenObj("Nav_"+nID);
}
$("Nav").getElementsByTagName("li")[nID].getElementsByTagName("a")[0].className="";
},
showIt : function(nID){
if($("Nav_"+nID)){
if($("Nav_"+nID).filters.alpha.opacity