//--------------- 主导航条内容 ------------//
var mainLayer=new Array("校园概况","教育培养","科学研究","学科师资","招生就业","校友天地","学生天地","信息资源","院系设置","合作交流");//主导航栏目

//--------------- 次导航条内容 ------------//
var subLayer0=new Array("校园简介","现任领导","历史沿革","领导题词","校园风光","校园地图","东校区平面图","管理机构"); //导航栏目一下的次级栏目
var subLayerHttp0=new Array("http://www.njtu.edu.cn/xrld/xyjj.htm","http://www.njtu.edu.cn/xrld/xrld.htm","http://www.njtu.edu.cn/xrld/lsyg.htm","http://www.njtu.edu.cn/xrld/ldtc.htm","http://www.njtu.edu.cn/fengjing/index.html","http://www.njtu.edu.cn/xrld/pingmian.htm","http://job.njtu.edu.cn/html/jianjie/pingmiantu_dianli.html","./gljg.htm");//主导航栏目一下的次级栏目连接地址
var subLayer1=new Array("本科生","研究生","成人教育","网络教育","留学生");//导航栏目二的次级栏目
var subLayerHttp1=new Array("http://jgjwc.njtu.edu.cn:8080/bjtujwc/index.jsp","http://gs.njtu.edu.cn","http://dis.njtu.edu.cn/","http://dis.njtu.edu.cn/","http://www.njtu.edu.cn/jg/jgws/index_cn.htm");//主导航栏目二的次级栏目连接地址
var subLayer2=new Array("实验室建设","学术活动","交大学报(自)","交大学报(社)","科技成果","论文检索","基础产业研究中心","轨道交通控制与安全国家重点实验室","全光网络与现代通信网教育部重点实验室");
var subLayerHttp2=new Array("http://202.112.150.129:8088/211/lab/lab_construction&management.htm","http://kjc.njtu.edu.cn/","http://kjc.bjtu.edu.cn/xb/xb.htm","http://kjc.bjtu.edu.cn/xb/xbsk/home.htm","http://kjc.bjtu.edu.cn","http://kjc.njtu.edu.cn/","http://cir.njtu.edu.cn","http://211.71.69.37/trafficlab/","http://fiberlab.njtu.edu.cn");
var subLayer3=new Array("学科建设","两院院士","长江学者","教授","重点学科","人才招聘","博士后流动站","博导风采");
var subLayerHttp3=new Array("http://202.112.150.129:8088/211/index.asp","http://www.njtu.edu.cn/jg/jgrs/IndexRenShi.htm","http://www.njtu.edu.cn/jg/jgrs/4cjxz.htm","http://www.njtu.edu.cn/jg/jgrs/IndexRenShi.htm","http://www.njtu.edu.cn/jg/jgrs/IndexRenShi.htm","http://www.njtu.edu.cn/jg/jgrs/3lcyj.htm","http://www.njtu.edu.cn/jg/jgrs/IndexRenShi.htm","http://gs.njtu.edu.cn/");
var subLayer4=new Array("本科生招生","研究生招生","国防生","成人教育招生","网络教育招生","高职招生","本科生就业","研究生就业");
var subLayerHttp4=new Array("http://zsw.njtu.edu.cn/","http://gs.njtu.edu.cn/","http://jgxpb.njtu.edu.cn/","http://dis.njtu.edu.cn/","http://dis.njtu.edu.cn/","http://zsw.njtu.edu.cn/zhaosheng/gaozhi.aspx","http://job.njtu.edu.cn/","http://job.njtu.edu.cn/");
var subLayer5=new Array("校友天地");
var subLayerHttp5=new Array("http://202.112.154.87/");
var subLayer6=new Array("学生处.武装部","共青团","学生会","研究生会","'三个代表'重要思想学习研究会","志愿者服务团","学生社团","学生心理素质教育中心");
var subLayerHttp6=new Array("http://jgxsc.njtu.edu.cn/","http://youth.njtu.edu.cn","http://youth.njtu.edu.cn/xsh/index.asp","http://youth.njtu.edu.cn/yjsh/index.asp"," http://youth.njtu.edu.cn/sgdb/index.htm","http://youth.njtu.edu.cn/zyzt/volunteer.htm","http://youth.njtu.edu.cn/stb/","http://jgxsc.njtu.edu.cn/xlzx/");
var subLayer7=new Array("校务信箱","图书馆","档案馆","出版社","红果园BBS","网络中心","网络费用","校园新闻网","电子邮件查询","管理信息系统","一卡通中心");
var subLayerHttp7=new Array("http://bbs.njtu.edu.cn/cgi-bin/bbsnew/bbsboa?7","http://lib.njtu.edu.cn/","http://www.njtu.edu.cn/jg/jgdbxb/danganguan/index.html","http://press.njtu.edu.cn/","http://bbs.njtu.edu.cn/","http://cnc.njtu.edu.cn/","http://www.njtu.edu.cn/Network_Charge/Network_Charge.html","http://localnews.njtu.edu.cn/","http://www.njtu.edu.cn/Email_Query/Email_Query01.htm","http://mis.njtu.edu.cn/","http://ecard.bjtu.edu.cn");
var subLayer8=new Array("电子信息工程学院","计算机与信息技术学院","经济管理学院","交通运输学院","土木建筑工程学院","机械与电子控制工程学院","电气工程学院","理学院","人文社会科学学院","远程与继续教育学院","软件学院","物流研究院");
var subLayerHttp8=new Array("http://eaie.njtu.edu.cn/","http://cit.njtu.edu.cn/","http://sem.njtu.edu.cn/","http://trans.njtu.edu.cn/","http://civil.njtu.edu.cn/","http://www.njtu.edu.cn/depart/xyjxdq/index.html","http://ee.njtu.edu.cn/","http://www.njtu.edu.cn/depart/xyl/index.html","http://rwxy.njtu.edu.cn/","http://dis.njtu.edu.cn/","http://rjxy.njtu.edu.cn/","http://www.njtu.edu.cn/depart/bfwlyj/zhuye/");
var subLayer9=new Array("国际交流","中澳国际MBA","GSM-R 论坛","中欧智能交通培训中心","中英智能交通系统研究开发和培训中心","Cisco网络技术学院","VUE授权国际认证考试中心","交通运输规划与管理长江学者研究中心","中英联合培养“交通规划与工程”硕士","北京交大留学服务中心","北京交通大学培训中心");
var subLayerHttp9=new Array("http://www.njtu.edu.cn/jg/jgws/index_cn.htm","http://cabs.njtu.edu.cn/","http://211.71.69.172/","http://www.njtu.edu.cn/department/new/index.htm","http://ucic.njtu.edu.cn/","http://cisco-netacad.bjtu.edu.cn/","http://cisco-netacad.bjtu.edu.cn/vue.htm","http://cjsrc.njtu.edu.cn/","http://china-uk-traffic.bjtu.edu.cn/","http://www.ossc.cn","http://www.bjtupx.com/");



//--------------- 主导航条Table参数调整 ------------//
var mainTableTdWidth=59; //每个TD的宽度，调整主导航内容间距
var mainTableTdHeight=19;
var mainTableBorder=0; //调整主导航表格边框宽度
var mainTableCellspacing=0; //调整主导航表格Cellspacing
var mainTableCellpadding=0; //调整主导航表格Cellpadding
var mainTableBgcolor="#000000"; //调整主导航表格背景色
var mainTableBordercolor=""; //调整主导航表格编框颜色
var mainTableBackgroundImg=""; //调整主导航表格背景图片url地址
var hrefClassName="dhfont"; //调整url风格样式
var mainTableTdBgcolor="#003366"; //调整主导航表格Td色

//--------------- 次导航条Table参数调整 ------------//
var subTableBorder=0; //调整次导航条表格边框宽度
var subTableCellspacing=0; //调整次导航条表格Cellspacing
var subTableCellpadding=0; //调整次导航条表格Cellpadding
var subTableBgcolor="#000000"; //调整次导航条表格背景色
var subTableBordercolor=""; //次导航条表格编框颜色
var subTableBackgroundImg=""; //次导航条表格背景图片url地址
var subTableTdBgcolor="#003366"; //调整次导航表格Td色
var sbuTabbleTop=19; //次导航表格上下微调
var sbuTabbleLeft=1; //次导航表格左右微调

//--------------- 系统参数*请勿调整 ------------//
var layerMax=mainLayer.length+10;
var layerName="index"

//--------------- 生成下拉菜单 ------------//
function createMainLayer(){ 
document.write("<table border=0 cellspacing=0 cellpadding=0><tr><td><div id='wall' onmouseout=layervib('visible','"+layerMax+"') style='position:relative; left:0px; top:0px; width:100%; z-index:1' ><table width='600' height="+mainTableTdHeight+" border='"+mainTableBorder+"' cellspacing='"+mainTableCellpadding+"' cellpadding='"+mainTableCellpadding+"' bgcolor='"+mainTableBgcolor+"' bordercolor='"+mainTableBordercolor+"' background='"+mainTableBackgroundImg+"'><tr>");
for(i=0;i<mainLayer.length;i++){
document.write("<td width='"+mainTableTdWidth+"' height='"+mainTableTdHeight+"' bgcolor='"+mainTableTdBgcolor+"' class='"+hrefClassName+"' onmouseover=layervib('visible','"+i+"')><a href='#' class='"+hrefClassName+"'>"+mainLayer[i]+"</a></td>");
}
document.write("</tr></table>");

for(j=0;j<mainLayer.length-2;j++){
createSubLayer(j,100,0);
}
//for(j=mainLayer.length-2;j<mainLayer.length;j++)
//{
createSubLayer(mainLayer.length-2,145,18);
createSubLayer(mainLayer.length-1,210,142);
//}
document.write("</div></td></tr></table>");
}


//--------------- 生成每项下拉菜单内容 ------------//
function createSubLayer(num,divWidth,offset){
var subLayerName= layerName +num;
var subLayerLeft=(mainTableTdWidth*num)+mainTableCellpadding+mainTableBorder;
var subLayerList=eval("subLayer"+num);
var subLayerLeftMargin=subLayerLeft+sbuTabbleLeft-offset;
//var LayerID=eval("Layer"+num);
var subLayerHttpList=eval("subLayerHttp"+num);
document.write("<div id='"+subLayerName+"' style='position:absolute; left:"+subLayerLeftMargin+"px; top:"+((mainTableBorder+mainTableCellspacing+mainTableCellpadding)*2+sbuTabbleTop)+"px; z-index:2; height: 24px; visibility: hidden' onmouseover=layervib('visible','"+num+"') onmouseout=layervib('visible','"+layerMax+"')>");
if(subLayerList.length!=0){
document.write("<table width='"+divWidth+"' border='"+subTableBorder+"' cellspacing='"+subTableCellpadding+"' cellpadding='"+subTableCellpadding+"' bgcolor='"+subTableBgcolor+"' bordercolor='"+subTableBordercolor+"' background='"+subTableBackgroundImg+"'") 
for(h=0;h<subLayerList.length;h++){ 
//var itemID=eval('item_'+num+'_'+h);
document.write("<tr><td id='item"+num+"_"+h+"' onmouseover=changelight('item"+num+"_"+h+"','dropmenuHIGH') onmouseout=changelight('item"+num+"_"+h+"','dropmenu')  bgcolor='"+subTableTdBgcolor+"' width='100%' class='"+hrefClassName+"'><a href='"+ subLayerHttpList [h]+"' class='"+hrefClassName+"'>&nbsp;"+subLayerList[h]+"</a></td></tr>");
document.write("<tr><td bgcolor='#4B6B9A' height='1' width='100%'></td></tr>");
//document.write("<tr><td bgcolor='"+subTableTdBgcolor+"' width='100%' class='link'><font size='2'><a href='"+ subLayerHttpList [h]+"' class='link'>"+subLayerList[h]+"</a></font></td></tr>");

}
document.write("</table>");
}
document.write("</div>"); 

}

//Highlight function.  Change the specified object's class to the specified class name.  Class must be in main CSS file or in page itself.
function changelight(row, stylename) {
eval('document.all.' + row + '.className = "' + stylename + '"');
}


//------------------------------次菜单显隐控制--------------------------//
function layervib(type,num){
var H=type;
var temp=(H='visible'?'hidden':'visible')
for(var i=0;i<mainLayer.length;i++){
var E=eval('document.all.index'+i+'.style');
var H=eval(i);
if(i==num){E.visibility=type}else{E.visibility=temp};
}
}

function switchCell(n) {
	for(i=0;i<navcell.length;i++){
		navcell[i].className="tab-off";
		tb[i].style.display="none";
	}
	navcell[n].className="tab-on";
	tb[n].style.display="block";
	//tb_content.height=screen.availHeight-tb_header.clientHeight-tb_navbar.clientHeight-tb_footer.clientHeight-64;
}
