var $ = function(o){return (typeof o == "object") ? o: document.getElementById(o)};
var sg=8;
function fdexpo(obj)
{
    var pex = document.getElementById("divnav");
	var pex2 = document.getElementById("divnavlist");
	var pex21 = obj.parentNode.getElementsByTagName("div");
	var tex2 = pex2.getElementsByTagName("div");
	var nex2 = pex21.length;
    pex.style.backgroundPosition =  "0px 0px";
	for(i=0;i<nex2;i++)
	{
		if(pex21[i] == obj)
		{
			pex21[i].className = "nv2";
			tex2[i].className = "dis";
			k=i*90;
			pex.style.backgroundPosition =  k +"px 0px";
			sg=i;
		}
		else
		{
			pex21[i].className = "nv1";
			tex2[i].className = "undis";				
		}
	}
}	




function getUrl(){
	//8.12Ì·ÇÙ¸Ä
	//iÔ´´úÂë 
	//var tags = $("mainNavgiter").getElementsByTagName("div");		
	var exnavobj=document.getElementById("divnav");
	if(exnavobj==null)
	return;
	var tags = exnavobj.getElementsByTagName("div");		
	var now=thepage();
	fdexpo(tags[now])
}
getUrl();

function fdagain(sgg){
	
	getUrl();
		
}

function sdexpo(sd){
		fdexpo($("divnav").getElementsByTagName("div")[sd]);
}
 function thepage(){
	var address=document.location.toString();
	if(address.indexOf('zhengwugongkai')>-1)
	{
		return 1;
	}
	else if(address.indexOf('zhengcefagui')>-1)
	{
		return 2;	
	}	else if(address.indexOf('jianzhuguanli')>-1)
	{
		return 3;	
	}
		else if(address.indexOf('chengshijianshe')>-1)
	{
		return 4;	
	}
		else if(address.indexOf('wangshangbanshi')>-1)
	{
		return 5;	
	}
		else if(address.indexOf('zhuantizhuanlan')>-1)
	{
		return 6;	
	}	else if(address.indexOf('gongzhongcanyu')>-1)
	{
		return 7;
	}
	/*else if(address.indexOf('jiubanrukou')>-1)
	{
		return 7;
	}*/
	else{
		return 0;
	}
	
	
 }