function fx(el,attr,to)
{
	el=typeof el=='string'?document.getElementById(el):el;
	if(to>0)el.style.display='block';
	if(to==0)el.style.display='none';
};

function setMenuStyle()
{
	var arr = document.getElementsByTagName("div");
	for(var i=0;i<arr.length;i++){
		if(arr[i].id=="childMenu"){
			arr[i].className='nav01';
		}
	}
	if(arguments.length>0){
		arguments[0].className='nav02';
	}
}

//下拉菜单
function setmenu(tab, div, h,cssOn,cssOff)
{
	var a=document.getElementById(tab);
	var d1=document.getElementById(div);
	d1.onmouseover=a.onmouseover=function (){fx(div,'height',h);a.className=cssOff;};
	d1.onmouseout=a.onmouseout=function (){fx(div,'height',0);a.className=cssOn;setMenuStyle();};
}

//切换菜单
function setTab(m,n)
{
	var tli=document.getElementById("menu"+m).getElementsByTagName("li");
	var mli=document.getElementById("main"+m).getElementsByTagName("div");

	for(i=0;i<tli.length;i++){
		tli[i].className=i==n?"hover":"";
		mli[i].style.display=i==n?"block":"none";
	}
}

//切换菜单
function setTab2(m,n)
{
	var tli=document.getElementById("menu"+m).getElementsByTagName("li");
	var mli=document.getElementById("main"+m).getElementsByTagName("div");

	for(i=0;i<tli.length-1;i++){
		tli[i].className=i==n?"hover":"";
		mli[i].style.display=i==n?"block":"none";
	}
}