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) {
		home_over = newImage("images/home-over.jpg");
		id4d_over = newImage("images/4d-over.jpg");
		products_over = newImage("images/products-over.jpg");
		izmjene_over = newImage("images/izmjene-over.jpg");
		reference_over = newImage("images/reference-over.jpg");
		partneri_over = newImage("images/partneri-over.jpg");
		download_over = newImage("images/download-over.jpg");
		wandjobs_over = newImage("images/wandjobs-over.jpg");
		kontakt_over = newImage("images/kontakt-over.jpg");
		preloadFlag = true;
	}
}