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) {
		nav_case_studies_on = newImage("/images/nav_case_studies_on.jpg");
		nav_about_mso_net_on = newImage("/images/nav_about_msonet_on.jpg");
		nav_contact_us_on = newImage("/images/nav_contact_us_on.jpg");
		nav_fact_files_on = newImage("/images/nav_fact_files_on.jpg");
		nav_home_on = newImage("/images/nav_home_on.jpg");
		nav_join_us_on = newImage("/images/nav_join_us_on.jpg");
		nav_news_on = newImage("/images/nav_news_on.jpg");
		nav_who_are_we_on = newImage("/images/nav_who_are_we_on.jpg");
		home_creative_on = newImage("/images/home_creative_on.gif");
		home_marketing_on = newImage("/images/home_marketing_on.gif");
		home_programming_on = newImage("/images/home_programming_on.gif");
		home_support_on = newImage("/images/home_support_on.gif");		
		content_creative_on = newImage("/images/content_creative_on.gif");
		content_marketing_on = newImage("/images/content_marketing_on.gif");
		content_programming_on = newImage("/images/content_programming_on.gif");
		content_support_on = newImage("/images/content_support_on.gif");		
		preloadFlag = true;
	}
}