onload = function() {
	if (screen.width > 1024) {
		images = new Array("/fotos/1440/angebot01.jpg", "/fotos/1440/angebot02.jpg", "/fotos/1440/angebot03.jpg", "/fotos/1440/angebot04.jpg", "/fotos/1440/angebot05.jpg", "/fotos/1440/angebot06.jpg", "/fotos/1440/angebot07.jpg", "/fotos/1440/angebot08.jpg", "/fotos/1440/angebot09.jpg");
	}	else {
		images = new Array("/fotos/1024/angebot01.jpg", "/fotos/1024/angebot02.jpg", "/fotos/1024/angebot03.jpg", "/fotos/1024/angebot04.jpg", "/fotos/1024/angebot05.jpg", "/fotos/1024/angebot06.jpg", "/fotos/1024/angebot07.jpg", "/fotos/1024/angebot08.jpg", "/fotos/1024/angebot09.jpg");
	}
	rand = Math.floor(Math.random()*images.length);
	img = images[rand];
	document.body.style.background = "url("+img+") no-repeat fixed";
}