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) {
		home_o         = newImage("images/home-o.gif");
		photogallery_o = newImage("images/photogallery-o.gif");
		testimonial_o  = newImage("images/testimonial-o.gif");
		callapp_o      = newImage("images/callapp-o.gif");
		telemedicine_o = newImage("images/telemedicine-o.gif");
		digservices_o  = newImage("images/digservices-o.gif");
		careers_o      = newImage("images/careers-o.gif");
		contact_o      = newImage("images/contact-o.gif");
		over_1_home_o         = newImage("images/over1.gif");
		over_1_photogallery_o = newImage("images/over2.gif");
		over_1_testimonial_o  = newImage("images/over3.gif");
		over_1_callapp_o      = newImage("images/over4.gif");
		over_1_telemedicine_o = newImage("images/over5.gif");
		over_1_digservices_o  = newImage("images/over6.gif");
		over_1_careers_o      = newImage("images/over7.gif");
		over_1_contact_o      = newImage("images/over8.gif");
		preloadFlag= true;
	}
}