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) {
		interface_03_over = newImage("IMG/images/interface_03-over.gif");
		interface_06_over = newImage("IMG/images/interface_06-over.gif");
		interface_08_over = newImage("images/interface_08-over.gif");
		interface_10_over = newImage("images/interface_10-over.gif");
		interface_12_over = newImage("images/interface_12-over.gif");
		interface_14_over = newImage("images/interface_14-over.gif");
		interface_16_over = newImage("images/interface_16-over.gif");
		actualites_01_over = newImage("images/actualites_01-over.gif");
		archives_01_over = newImage("images/archives_01-over.gif");
		editions_01_over = newImage("images/editions_01-over.gif");
		labo_01_over = newImage("images/labo_01-over.gif");
		sons_01_over = newImage("images/sons_01-over.gif");
		preloadFlag = true;
	}
}