function setTab(m,n){
 var tli=document.getElementById("menu"+m).getElementsByTagName("li");
 var mli=document.getElementById("main"+m).getElementsByTagName("ul");
 for(i=0;i<tli.length;i++){
  tli[i].className=i==n?"hover":"";
  mli[i].style.display=i==n?"block":"none";
 }
}

function setTab2(m,n){
 var tli=document.getElementById("menu"+m).getElementsByTagName("li");
 //var mli=document.getElementById("main"+m).getElementsByTagName("ul");
 for(i=0;i<tli.length;i++){
  tli[i].className=i==n?"hover":"";
 // mli[i].style.display=i==n?"block":"none";
 }
}

function change(num){
	var d=document;
	for(var i=1;i<=5;i++){
			if(i==num){
				d.getElementById("menu"+i).style.display="";
				d.getElementById("nav"+i).className+="hover";
			}
			else{
				d.getElementById("menu"+i).style.display="none";
				d.getElementById("nav"+i).className=d.getElementById("nav"+i).className.replace("hover","");
			}
		}
	}

//初始化XMLHTTP
function ajaxInit(){
	var A;
	try{
		A = new XMLHttpRequest();
	}catch(e){
		try{
			A = new ActiveXObject("Microsoft.XMLHTTP");
		}catch(e){
			try{
				A = new ActiveXObject("Msxml2.XMLHTTP");
			}catch(e){
				A = false;
			}
		}
	}
	return A;
}


function MM_jumpMenu(targ,selObj,restore){
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}//option链接