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_firm_over = newImage("tpl/m-firm_over.gif");
		m_firm_down = newImage("tpl/m-firm_down.gif");
		m_catalog_over = newImage("tpl/m-catalog_over.gif");
		m_catalog_down = newImage("tpl/m-catalog_down.gif");
		m_tovar_over = newImage("tpl/m-tovar_over.gif");
		m_tovar_down = newImage("tpl/m-tovar_down.gif");
		m_kontakt_over = newImage("tpl/m-kontakt_over.gif");
		m_kontakt_down = newImage("tpl/m-kontakt_down.gif");
		m_links_over = newImage("tpl/m-links_over.gif");
		m_links_down = newImage("tpl/m-links_down.gif");
		preloadFlag = true;
	}
}