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 = 'images/' + changeImages.arguments[i] + '_' + changeImages.arguments[i+1] + '.gif';
		}
	}
}
var preloadFlag = false;
function preloadImages(arg) {
	if (document.images) {
		x = newImage("images/" + arg + "bClients_over.gif");
		x = newImage("images/" + arg + "bClients_down.gif");
		x = newImage("images/" + arg + "bServices_over.gif");
		x = newImage("images/" + arg + "bServices_down.gif");
		x = newImage("images/" + arg + "bNews_over.gif");
		x = newImage("images/" + arg + "bNews_down.gif");
		x = newImage("images/" + arg + "bStaff_over.gif");
		x = newImage("images/" + arg + "bStaff_down.gif");
		x = newImage("images/" + arg + "bPartners_over.gif");
		x = newImage("images/" + arg + "bPartners_down.gif");
		x = newImage("images/" + arg + "bSustain_over.gif");
		x = newImage("images/" + arg + "bSustain_down.gif");
		x = newImage("images/" + arg + "bContact_over.gif");
		x = newImage("images/" + arg + "bContact_down.gif");
		x = newImage("images/" + arg + "bLinks_over.gif");
		x = newImage("images/" + arg + "bLinks_down.gif");
		preloadFlag = true;
	}
}