function valtozo_gomb(gomb, ertek){
	gomb.src = gomb.src.substring(0, gomb.src.length - 6) + "_" + ertek + ".png";
}

var lastElement = "";
function showDetail(element) {
	if (lastElement!="") {
		document.getElementById(lastElement).style.display = 'none';
		document.getElementById(lastElement).style.visibility = 'hidden';
	}
	document.getElementById(element).style.display = '';
	document.getElementById(element).style.visibility = '';
	lastElement = element;
}