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) {
		region_selector_Nordost_over = newImage("images/region.selector-Nordost_ove.gif");
		region_selector_Nord_over = newImage("images/region.selector-Nord_over.gif");
		region_selector_Nordwest_over = newImage("images/region.selector-Nordwest_ov.gif");
		region_selector_West_over = newImage("images/region.selector-West_over.gif");
		region_selector_Suedwest_over = newImage("images/region.selector-Suedwest_ov.gif");
		region_selector_Mitte_over = newImage("images/region.selector-Mitte_over.gif");
		region_selector_Alt_West_over = newImage("images/region.selector-Alt-West_ov.gif");
		region_selector_Ost_over = newImage("images/region.selector-Ost_over.gif");
		region_selector_Sued_over = newImage("images/region.selector-Sued_over.gif");
		region_selector_Suedost_over = newImage("images/region.selector-Suedost_ove.gif");
		preloadFlag = true;
	}
}