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_s_metalurgie_over = newImage("images/m_s_metalurgie-over.gif");
		m_s_constructii_over = newImage("images/m_s_constructii-over.gif");
		m_s_cons_masini_over = newImage("images/m_s_cons_masini-over.gif");
		m_s_rulmenti_over = newImage("images/m_s_rulmenti-over.gif");
		m_s_sticlarie_over = newImage("images/m_s_sticlarie-over.gif");
		m_s_lemn_over = newImage("images/m_s_lemn-over.gif");
		men_s_coruri_over = newImage("images/men_s_coruri-over.gif");
		men_s_discuri_over = newImage("images/men_s_discuri-over.gif");
		men_s_abrazivi_over = newImage("images/men_s_abrazivi-over.gif");
		men_s_cert_cal_over = newImage("images/men_s_cert_cal-over.gif");
		preloadFlag = true;
	}
}