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) {
		map_01_egrb_over = newImage("/weather/images/map_01-egrb_over.gif");
		map_01_egri_over = newImage("/weather/images/map_01-egri_over.gif");
		map_01_egrd_over = newImage("/weather/images/map_01-egrd_over.gif");
		map_01_egrd_over005 = newImage("/weather/images/map_01-egrd_over-05.gif");
		map_01_egrr_over = newImage("/weather/images/map_01-egrr_over.gif");
		map_01_egbb_over = newImage("/weather/images/map_01-egbb_over.gif");
		map_01_egrc_over = newImage("/weather/images/map_01-egrc_over.gif");
		map_01_egry_over = newImage("/weather/images/map_01-egry_over.gif");
		map_01_egrt_over = newImage("/weather/images/map_01-egrt_over.gif");
		map_01_egra_over = newImage("/weather/images/map_01-egra_over.gif");
		map_01_egrg_over = newImage("/weather/images/map_01-egrg_over.gif");
		map_01_egrg_over013 = newImage("/weather/images/map_01-egrg_over-13.gif");
		preloadFlag = true;
	}
}