function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

ImageArray = new Array;
var preloadFlag = false;
function preloadImages() {
	if (document.images) {

		ImageArray[ImageArray.length++] = newImage('images/home.jpg');
		ImageArray[ImageArray.length++] = newImage('images/home_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/produkte.jpg');
		ImageArray[ImageArray.length++] = newImage('images/produkte_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/impression.jpg');
		ImageArray[ImageArray.length++] = newImage('images/impression_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/nature.jpg');
		ImageArray[ImageArray.length++] = newImage('images/nature_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/vulcano.jpg');
		ImageArray[ImageArray.length++] = newImage('images/vulcano_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/arctica.jpg');
		ImageArray[ImageArray.length++] = newImage('images/arctica_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/amundsen.jpg');
		ImageArray[ImageArray.length++] = newImage('images/amundsen_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/tornado.jpg');
		ImageArray[ImageArray.length++] = newImage('images/tornado_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/hurricane.jpg');
		ImageArray[ImageArray.length++] = newImage('images/hurricane_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/accessoires.jpg');
		ImageArray[ImageArray.length++] = newImage('images/accessoires_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/download.jpg');
		ImageArray[ImageArray.length++] = newImage('images/download_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/kontakt.jpg');
		ImageArray[ImageArray.length++] = newImage('images/kontakt_over.jpg');

		ImageArray[ImageArray.length++] = newImage('images/impressum.jpg');
		ImageArray[ImageArray.length++] = newImage('images/impressum_over.jpg');

		preloadFlag = true;
	}
}

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];
		}
	}
}

preloadImages();