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_main_for_the_home_over 		= newImage("/images/nav_main_for_the_home-over.gif");
		nav_main_for_him_over 			= newImage("/images/nav_main_for_him-over.gif");
		nav_main_for_her_over 			= newImage("/images/nav_main_for_her-over.gif");
		nav_main_electrical_over 		= newImage("/images/nav_main_electrical-over.gif");
		nav_main_sport_and_leisure_over	= newImage("/images/nav_main_sport_and_leisure-over.gif");
		nav_main_nursey_over 			= newImage("/images/nav_main_nursey-over.gif");
		nav_main_fun_time_over 			= newImage("/images/nav_main_fun_time-over.gif");
		nav_main_gifts_over 			= newImage("/images/nav_main_gifts-over.gif");
		preloadFlag = true;
	}
}