var MaxMenuCount = 0;
function main_fMenu(num){
	for(var i=1; i<=MaxMenuCount; i++){
		var dObj = document.getElementById("main_menu" + i);
		var sObj = document.getElementById("main_submenu" + i);
		var img = dObj.getElementsByTagName("img");
		if(num!=i){
			sObj.style.display = "none";
			img[0].src = "/img/main_menu" + i + ".gif";
		}else{
			sObj.style.display = "block";
			img[0].src = "/img/main_menu" + i + "over.gif";
		}
	}
}