// JavaScript Document
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) {
		nvAbout_over = newImage("/images/nvAbout-over.gif");
		nvValueEngineering_over = newImage("/images/nvValueEngineering-over.gif");
		nvConference_over = newImage("/images/nvConference-over.gif");
		nvFindVM_over = newImage("/images/nvFindVM-over.gif");
		nvEducation_over = newImage("/images/nvEducation-over.gif");
		nvJoin_over = newImage("/images/nvJoin-over.gif");
		nvContact_over = newImage("/images/nvContact-over.gif");
		nvMemberLogin_over = newImage("/images/nvMemberLogin-over.gif");
		preloadFlag = true;
	}
}