function SubmenuInit() {
		for(i=1; i<=5; i++) {
			if(document.getElementById("submenu" + i)) document.getElementById("submenu" + i).style.display = "none";
		}
	}
	
	function MenuShow(menuid){
		for(i=1; i<=5; i++) {
			var submenu = document.getElementById("submenu" + i);
			if(i == menuid) submenu.style.display="";
			else submenu.style.display="none";
		}
	}

	function MenuHide(){
		for(i=1; i<=5; i++) {
			var submenu = document.getElementById("submenu" + i);
			if(submenu.style.display != "none") submenu.style.display="none";
		}
	}


	function changeMenuToSub(menuid,kt) {
		var menu = document.getElementById(menuid);
		var menu_active  = "img/"+kt+"/menu_hu_0" + menuid + "_2.gif";
		menu.src = menu_active;
	}


	function changeMenuToDefault(menuid,kt) {
		var menu = document.getElementById(menuid);
		var menu_default = "img/"+kt+"/menu_hu_0" + menuid + ".gif";
		menu.src = menu_default;
	}

	function gotoInfo() {	
		infolink = document.forms["menuselect"].products;
		destination = infolink.options[infolink.selectedIndex].value;
		
		switch (destination) {
			case "1":	goURL = "notebook.php?pr=1";
						break;

			case "2":	goURL = "notebook.php?pr=2";
						break;

			case "3":	goURL = "pc.php?pr=1";
						break;

			case "4":	goURL = "pc.php?pr=2";
						break;

			case "5":	goURL = "soho.php?pr=1";
						break;

      case "6":	goURL = "soho.php?pr=2";
		   			break;
		  
			case "7":	goURL = "notebook.php?pr=4";
						break;
			
      case "8":	goURL = "kepatvitel.php?pr=1";
						break;
			
			case "9":	goURL = "hangatvitel.php?pr=1";
						break;

			case "10":	goURL = "hangatvitel.php?pr=2";
						break;

			case "11":	goURL = "hangatvitel.php?pr=3";
						break;

			case "12":	goURL = "http://www.m2mportal.hu/adatkommunikacio.php";
						break;
			
		 default:	break;
		
		}
		
		if (goURL) window.location.href = goURL;
		
	}

	function  changeImage(fn) {
		document.images['product_pic'].src = "./img/products/" + fn;
	}