function layer_off() {
		document.getElementById('layer').style.display = 'none';
}
function layer_on() {
		document.getElementById('layer').style.display = 'block';
		setTimeout('layer_off()',2000);
}



	var MenuShown;
	var MenuObj = '';
	
	function ShowMenu(obj) {
		if (MenuObj != '')  {
			document.getElementById(MenuObj).style.display = 'none';
			document.getElementById('HideBg').style.display = 'none';
			clearTimeout(MenuShown);
			document.getElementById(MenuObj.substr(2, MenuObj.length)).src = document.getElementById(MenuObj.substr(2, MenuObj.length)).src.substr(0, document.getElementById(MenuObj.substr(2, MenuObj.length)).src.lastIndexOf('.') - 2) + document.getElementById(MenuObj.substr(2, MenuObj.length)).src.substr(document.getElementById(MenuObj.substr(2, MenuObj.length)).src.lastIndexOf('.'), 4);
		}
		MenuObj = 'al' + obj.id;
		var h = 0;
		document.getElementById('al' + obj.id).style.top = findPosY(obj) + 23 + 'px';
		document.getElementById('al' + obj.id).style.left = findPosX(obj) + -14 + 'px';
		document.getElementById('al' + obj.id).style.display = 'block';
		if (navigator.appName == "Microsoft Internet Explorer"){
			for (i=0; i<document.getElementById('al' + obj.id).childNodes[0].childNodes.length; i++) {
				node = document.getElementById('al' + obj.id).childNodes[0].childNodes[i];
				if (node.nodeName=="LI") {
					h += 22;
				}
			}
			h += 3;
			document.getElementById('HideBg').style.top = findPosY(obj) + 23 + 'px';
			document.getElementById('HideBg').style.left = findPosX(obj) + -14 + 'px';
			document.getElementById('HideBg').style.width = document.getElementById('al' + obj.id).firstChild.offsetWidth;
			document.getElementById('HideBg').style.height = h + 'px';
			document.getElementById('HideBg').style.background = '#000000';
	    	document.getElementById('HideBg').style.display = 'block';
		}
		obj.src = obj.src.substr(0, obj.src.lastIndexOf('.')) + '_o' + obj.src.substr(obj.src.lastIndexOf('.'), 4);
	}

	function HideMenu(e) {
		document.getElementById(e).style.display = 'none';
		document.getElementById('HideBg').style.display = 'none';
		document.getElementById(e.substr(2, e.length)).src = document.getElementById(e.substr(2, e.length)).src.substr(0, document.getElementById(e.substr(2, e.length)).src.lastIndexOf('.') - 2) + document.getElementById(e.substr(2, e.length)).src.substr(document.getElementById(e.substr(2, e.length)).src.lastIndexOf('.'), 4);
		MenuObj = '';
	}

	function findPosY(obj)
	{
		var curtop = 0;
		if (obj.offsetParent)
		{
			while (obj.offsetParent)
			{
				curtop += obj.offsetTop
				obj = obj.offsetParent;
			}
		}
		else if (obj.y)
			curtop += obj.y;
		return curtop;
	}

	function findPosX(obj)
	{
		var curleft = 0;
		if (obj.offsetParent)
		{
			while (obj.offsetParent)
			{
				curleft += obj.offsetLeft;
				obj = obj.offsetParent;
			}
		}
		else if (obj.x)
			curleft += obj.x;
		return curleft;
	}




	function ShowMenu_x(obj) {
		if (MenuObj != '')  {
			document.getElementById(MenuObj).style.display = 'none';
			document.getElementById('HideBg').style.display = 'none';
			clearTimeout(MenuShown);
			document.getElementById(MenuObj.substr(2, MenuObj.length)).src = document.getElementById(MenuObj.substr(2, MenuObj.length)).src.substr(0, document.getElementById(MenuObj.substr(2, MenuObj.length)).src.lastIndexOf('.') - 2) + document.getElementById(MenuObj.substr(2, MenuObj.length)).src.substr(document.getElementById(MenuObj.substr(2, MenuObj.length)).src.lastIndexOf('.'), 4);
		}
		MenuObj = 'al' + obj.id;
		var h = 0;
		document.getElementById('al' + obj.id).style.top = findPosY(obj) + 55 + 'px';
		document.getElementById('al' + obj.id).style.left = findPosX(obj) + -96 + 'px';
		document.getElementById('al' + obj.id).style.display = 'block';
		if (navigator.appName == "Microsoft Internet Explorer"){
			for (i=0; i<document.getElementById('al' + obj.id).childNodes[0].childNodes.length; i++) {
				node = document.getElementById('al' + obj.id).childNodes[0].childNodes[i];
				if (node.nodeName=="LI") {
					h += 22;
				}
			}
			h += 3;
			document.getElementById('HideBg').style.top = findPosY(obj) + 23 + 'px';
			document.getElementById('HideBg').style.left = findPosX(obj) + -14 + 'px';
			document.getElementById('HideBg').style.width = document.getElementById('al' + obj.id).firstChild.offsetWidth;
			document.getElementById('HideBg').style.height = h + 'px';
			document.getElementById('HideBg').style.background = '#000000';
	    		/* document.getElementById('HideBg').style.display = 'block';*/
		}
		obj.src = obj.src.substr(0, obj.src.lastIndexOf('.')) + '_o' + obj.src.substr(obj.src.lastIndexOf('.'), 4);
	}
	



var nyitva_kelany = 1;
function lenyit_kelany(){
	if (nyitva_kelany == 0){
		document.getElementById('kelany').style.display = 'block';
		nyitva_kelany = 1;
	}else{
		document.getElementById('kelany').style.display = 'none'; 
		nyitva_kelany = 0;
	}
}

var nyitva_hal_eszk = 1;
function lenyit_hal_eszk(){
	if (nyitva_hal_eszk == 0){
		document.getElementById('hal_eszk').style.display = 'block';
		nyitva_hal_eszk = 1;
	}else{
		document.getElementById('hal_eszk').style.display = 'none'; 
		nyitva_hal_eszk = 0;
	}
}

var nyitva_kabelek = 1;
function lenyit_kabelek(){
	if (nyitva_kabelek == 0){
		document.getElementById('kabelek').style.display = 'block';
		nyitva_kabelek = 1;
	}else{
		document.getElementById('kabelek').style.display = 'none'; 
		nyitva_kabelek = 0;
	}
}

var nyitva_perif = 1;
function lenyit_perif(){
	if (nyitva_perif == 0){
		document.getElementById('perif').style.display = 'block';
		nyitva_perif = 1;
	}else{
		document.getElementById('perif').style.display = 'none'; 
		nyitva_perif = 0;
	}
}

var nyitva_alkatresz = 1;
function lenyit_alkatresz(){
	if (nyitva_alkatresz == 0){
		document.getElementById('alkatresz').style.display = 'block';
		nyitva_alkatresz = 1;
	}else{
		document.getElementById('alkatresz').style.display = 'none'; 
		nyitva_alkatresz = 0;
	}
}