function showMenu(current, active) {
	if (current != active) {
		var object = document.getElementById("ml"+current);
		if (object) object.className = "main_menu_left2";
		var object = document.getElementById("mm"+current);
		if (object) object.className = "main_menu2";
		var object = document.getElementById("md"+current);
		if (object) object.className = "main_menu_middle2";
		var object = document.getElementById("mr"+current);
		if (object) object.className = "main_menu_right2";
		
		var object = document.getElementById("md"+(current-1));
		
		if (object) {
			if (current - active == 1) {
				object.className = "main_menu_middle4";
			}
			else object.className = "main_menu_middle3";
		}
		
		var object = document.getElementById("mdl"+active);
		if (object) {
			if (active - current == 1) {
				object.className = "main_menu_middle4";
			}
		}
	}
	
	var object = document.getElementById("ul"+current);
	
	if (object) {
		object.style.display = "block";
		
		sub_menu_width = 0;
		x=object.childNodes;
		for (i=0;i<x.length;i++) {
			if (x[i].nodeType == 1) sub_menu_width += x[i].offsetWidth + 1;
		}
		
		object.style.width = sub_menu_width + "px";
		
		space = 880;
		for (i=1; i<current; i++) {
			space -= (document.getElementById("mm"+i).offsetWidth + 20);
		}
		
		if (sub_menu_width > space)	object.style.left = (space - sub_menu_width) + "px";
	}

}

function hideMenu(current, active) {
	if (current != active) {
		var object = document.getElementById("ml"+current);
		if (object) object.className = "main_menu_left";
		var object = document.getElementById("mm"+current);
		if (object) object.className = "main_menu";
		var object = document.getElementById("md"+current);
		if (object) object.className = "main_menu_middle";
		var object = document.getElementById("mr"+current);
		if (object) object.className = "main_menu_right";
		
		var object = document.getElementById("md"+(current-1));
		if (object) {
			if (current - active == 1) {
				object.className = "main_menu_middle2";
			}
			else object.className = "main_menu_middle";
		}
		
		var object = document.getElementById("mdl"+active);
		if (object) {
			if (active - current == 1) {
				object.className = "main_menu_middle3";
			}
		}	
	}
	
	var object = document.getElementById("ul"+current);
	if (object) object.style.display = "none";
}

function showSubmenu(id) {
	var object = document.getElementById('ul2_'+id);
	if (object) object.style.display='block';
}

function hideSubmenu(id) {
	var object = document.getElementById('ul2_'+id);
	if (object) object.style.display='none';
}