function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		m_katalogus_over = newImage("images/m_katalogus-over.gif");
		m_katalogus_down = newImage("images/m_katalogus-down.gif");
		m_szolgaltatasok_over = newImage("images/m_szolgaltatasok-over.gif");
		m_szolgaltatasok_down = newImage("images/m_szolgaltatasok-down.gif");
		m_finanszirozas_over = newImage("images/m_finanszirozas-over.gif");
		m_finanszirozas_down = newImage("images/m_finanszirozas-down.gif");
		m_linkek_over = newImage("images/m_linkek-over.gif");
		m_linkek_down = newImage("images/m_linkek-down.gif");
		m_hirek_over = newImage("images/m_hirek-over.gif");
		m_hirek_down = newImage("images/m_hirek-down.gif");
		m_magunkrol_over = newImage("images/m_magunkrol-over.gif");
		m_magunkrol_down = newImage("images/m_magunkrol-down.gif");
		regisztracio_over = newImage("images/regisztracio-over.gif");
		bogyo_over = newImage("images/bogyo-over.gif");
		nyil_balra_over = newImage("images/nyil_balra-over.gif");
		nyil_jobbra_over = newImage("images/nyil_jobbra-over.gif");
		preloadFlag = true;
	}
}

function testminmaxdarab () {
	f=document.forms["calcform"];
	value=f.darab.value;
	if (value<1) {
		f.darab.value="1";
		value=f.darab.value;
	}
	f.ar.value=f.arperdarab.value*value;
}

function visszaardarab () {
	f=document.forms["calcform"];
	f.ar.value=f.arperdarab.value*f.darab.value;
}