<!--

	function img_check(imgName,imgsrc) {
		document[imgName].src = imgsrc;
	} 

	function showMenu(f){
		var el = document.getElementById("maindiv").getElementsByTagName("SPAN");
		for(var j=0; j<el.length; j++){
			if(el[j].id==f){
				el[j].style.visibility = "visible";
			}else{  //나머지 2dept는 안보이게 됨
				el[j].style.visibility = "hidden";
			}
		}
	}
	function hideMenu(){
		var el = document.getElementById("maindiv").getElementsByTagName("SPAN");
		for(var j=0; j<el.length; j++){
			el[j].style.visibility = "hidden";
		}
	}
//-->