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) {
		//main nav rollover
		about_on = newImage("/images/global/nav/about_on.gif");
		homeopathy_on = newImage("/images/global/nav/homeopathy_on.gif");
		products_on = newImage("/images/global/nav/products_on.gif");
		consumer_on = newImage("/images/global/nav/consumer_on.gif");
		healthpro_on = newImage("/images/global/nav/healthpro_on.gif");
		newsroom_on = newImage("/images/global/nav/newsroom_on.gif");
		//1.0 nav rollover
		btn_overview_on = newImage("/images/global/nav/btn_overview_on.gif");
		btn_ourpeople_on = newImage("/images/global/nav/btn_ourpeople_on.gif");
		btn_ourpartners_on = newImage("/images/global/nav/btn_ourpartners_on.gif");
		btn_careers_on = newImage("/images/global/nav/btn_careers_on.gif");
		//2.0 nav rollover
		btn_whatis_on = newImage("/images/global/nav/btn_whatis_on.gif");
		btn_dilution_on = newImage("/images/global/nav/btn_dilution_on.gif");
		btn_faq_on = newImage("/images/global/nav/btn_faq_on.gif");
		btn_research_on = newImage("/images/global/nav/btn_research_on.gif");
		//3.0 nav rollover
		btn_aboutproducts_on = newImage("/images/global/nav/btn_aboutproducts_on.gif");
		btn_symptom_on = newImage("/images/global/nav/btn_symptom_on.gif");
		btn_family_on = newImage("/images/global/nav/btn_family_on.gif");
		btn_name_on = newImage("/images/global/nav/btn_name_on.gif");
		btn_medcat_on = newImage("/images/global/nav/btn_medcat_on.gif");
		//4.0 nav rollover
		btn_homeopathy_on = newImage("/images/global/nav/btn_homeopathy_on.gif");
		btn_boironandyou_on = newImage("/images/global/nav/btn_boironandyou_on.gif");
		btn_wheretobuy_on = newImage("/images/global/nav/btn_wheretobuy_on.gif");
		btn_testimonials_on = newImage("/images/global/nav/btn_testimonials_on.gif");
		//5.0 nav rollover
		btn_resource_on = newImage("/images/global/nav/btn_resource_on.gif");
		btn_education_on = newImage("/images/global/nav/btn_education_on.gif");
		//6.0 nav rollover
		btn_currentnews_on = newImage("/images/global/nav/btn_current_news_on.gif");
		btn_presskits_on = newImage("/images/global/nav/btn_press_kits_on.gif");
		btn_photolibrary_on = newImage("/images/global/nav/btn_photo_library_on.gif");
		btn_newsroom_on = newImage("/images/global/nav/btn_contact_newsroom_on.gif");
		//7.0 nav rollover
		btn_news_media_contact_on = newImage("/images/global/nav/btn_news_media_contact_on.gif");
		btn_news_overview_on = newImage("/images/global/nav/btn_news_overview_on.gif");
		btn_news_photo_library_on = newImage("/images/global/nav/btn_news_photo_library_on.gif");
		btn_news_press_kits_on = newImage("/images/global/nav/btn_news_press_kits_on.gif");
		btn_news_press_releases_on = newImage("/images/global/nav/btn_news_press_releases_on.gif");
		preloadFlag = true;
	}
}