var timer;
function menuShow(menuObj){
	if(typeof(targetObj)=="undefined"){
		targetObj=document.getElementById(menuObj);
		targetObj.style.display="block";
		clearTimeout(timer);
	}else{
		targetObj.style.display="none";
		targetObj=document.getElementById(menuObj);
		targetObj.style.display="block";
		clearTimeout(timer);
	}
}
function menuHidden(){
	timer=setInterval("hidden()",2000);
}
function hidden(){
	if(key=""){
		key="hiddenMenu";
	}else{
		targetObj.style.display="none";
		clearTimeout(timer);
	}
}