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];
			document.getElementById(changeImages.arguments[i]).src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages(path) {
	if (document.images) {
	    Home_over = newImage(path + "/Home-over.gif");
		Members_over = newImage(path + "/Members-over.gif");
		Physicians_over = newImage(path + "/Physicians-over.gif");
		Managers_over = newImage(path + "/Managers-over.gif");
		Patients_over = newImage(path + "/Patients-over.gif");
		Advocacy_over = newImage(path + "/Advocacy-over.gif");
		preloadFlag = true;
	}
}