// JavaScript Document
var $$ = function(o){return (typeof o == "object") ? o: document.getElementById(o)};

		  function fdexpo(obj)
		  {
			obj.src=obj.src.replace("a1","1").replace("a2","2").replace("a3","3").replace("a4","4").replace("a5","5").replace("a6","6").replace("a7","7").replace("a8","8");
			
		  }	
var tags = $$("exnav").getElementsByTagName("IMG");	
function getUrl(){
	var now = 0;
	var url = document.location.href;
	
	var urlArr = url.split("/");
	var nowStr = urlArr[3].substring(0,4);
	switch(nowStr){ 
			//首页
			case 'inde':
			now=0;break;
			case '':
			now=0;break;
			//
			case 'about':
			now=1;break;
			
			//
			case 'case':
			now=2;break;
			
			//
			case 'team':
			now=3;break;
			
			//
			case 'know':
			now=4;break;

			//
			case 'cons':
			now=5;break;
			
			case 'news':
			now=6;break;

	
			default:
			now=7;
		}
		
fdexpo(tags[now])
}
getUrl();