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) {
		groot_lettertype_over = newImage("fileadmin/templateFris/images/groot_lettertype-over.jpg");
		home_over = newImage("fileadmin/templateFris/images/home-over.jpg");
		zoeken_over = newImage("fileadmin/templateFris/images/zoeken-over.jpg");
		help_over = newImage("fileadmin/templateFris/images/help-over.jpg");
		gkvlogo_over = newImage("fileadmin/templateFris/images/gkvlogo-over.jpg");
		
		printen_over = newImage("fileadmin/templateFris/images/printen-over.jpg");
		mailen_over = newImage("fileadmin/templateFris/images/mailen-over.jpg");
		opslaan_over = newImage("fileadmin/templateFris/images/opslaan-over.jpg");
		preloadFlag = true;
	}
}