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) {
		NavBrochure_o = newImage("../Nav/images/NavBrochure_o.gif");
		NavContact_o = newImage("../Nav/images/NavContact_o.gif");
		NavAcademic_o = newImage("../Nav/images/NavAcademic_o.gif");
		NavShowcase_o = newImage("../Nav/images/NavShowcase_o.gif");
		NavWhatsEA_o = newImage("../Nav/images/NavWhatsEA_o.gif");
		NavSuccess_o = newImage("../Nav/images/NavSuccess_o.gif");
		NavWork_o = newImage("../Nav/images/NavWork_o.gif");
		NavRequirement_o = newImage("../Nav/images/NavRequirement_o.gif");
		NavPotential_o = newImage("../Nav/images/NavPotential_o.gif");
		NavFacility_o = newImage("../Nav/images/NavFacility_o.gif");
		NavCurriculum_o = newImage("../Nav/images/NavCurriculum_o.gif");
		NavFaculty_o = newImage("../Nav/images/NavFaculty_o.gif");
		preloadFlag = true;
	}
}