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) {
		clube_over = newImage("images/clube-over.gif");
		noticias_over = newImage("images/noticias-over.gif");
		artigos_over = newImage("images/artigos-over.gif");
		eventos_over = newImage("images/eventos-over.gif");
		galeria_over = newImage("images/galeria-over.gif");
		mercado_over = newImage("images/mercado-over.gif");
		links_over = newImage("images/links-over.gif");
		preloadFlag = true;
	}
}

window.onload = preloadImages;