var menu_1 = new Image();
	menu_1.src = 'images/menu_1.jpg';
	var menu_1_up = new Image();
	menu_1_up.src = 'images/menu_1_u.jpg';
	var menu_2 = new Image();
	menu_2.src = 'images/menu_2.jpg';
	var menu_2_up = new Image();
	menu_2_up.src = 'images/menu_2_u.jpg';
	var menu_3 = new Image();
	menu_3.src = 'images/menu_3.jpg';
	var menu_3_up = new Image();
	menu_3_up.src = 'images/menu_3_u.jpg';
	var menu_4 = new Image();
	menu_4.src = 'images/menu_4.jpg';
	var menu_4_up = new Image();
	menu_4_up.src = 'images/menu_4_u.jpg';
	var menu_5 = new Image();
	menu_5.src = 'images/menu_5.jpg';
	var menu_5_up = new Image();
	menu_5_up.src = 'images/menu_5_u.jpg';
	function image_ch(mely, melyik){
	for (var y = 1; y <= 5; y++)
   			{
   				document.getElementById("menu_" + y + "").src = "images/menu_" + y + ".jpg";
   			}
		document.getElementById(mely).src = "images/menu_" + melyik + "_u.jpg";
		document.getElementById("menu_1").src = "images/menu_1_u.jpg";
	}
	function image_ch_2(mely, melyik){
		document.getElementById(mely).src = "images/menu_" + melyik + "_u.jpg";
	}
	function image_out(mely, melyik){
	for (var y = 1; y <= 5; y++)
   			{
   				document.getElementById("menu_" + y + "").src = "images/menu_" + y + ".jpg";
   			}
			document.getElementById("menu_1").src = "images/menu_1_u.jpg";
	}