// Vorladen der Buttons
		var img1out = new Image();
		img1out.src = '../material_html/en_btn_aktuelles.gif';
		var img2out = new Image();
		img2out.src = '../material_html/en_btn_produkte.gif';
		var img3out = new Image();
		img3out.src = '../material_html/en_btn_firma.gif';
		var img4out = new Image();
		img4out.src = '../material_html/en_btn_partner.gif';
		var img5out = new Image();
		img5out.src = '../material_html/en_btn_impressum.gif';
		var img6out = new Image();
		img6out.src = '../material_html/en_btn_kontakt_hover.gif';
	

		// Vorladen der 'Hover'-buttons
		var img1over = new Image();
		img1over.src = '../material_html/en_btn_aktuelles_hover.gif';
		var img2over = new Image();
		img2over.src = '../material_html/en_btn_produkte_hover.gif';
		var img3over = new Image();
		img3over.src = '../material_html/en_btn_firma_hover.gif';
		var img4over = new Image();
		img4over.src = '../material_html/en_btn_partner_hover.gif';
		var img5over = new Image();
		img5over.src = '../material_html/en_btn_impressum_hover.gif';
		var img6over = new Image();
		img6over.src = '../material_html/en_btn_kontakt_hover.gif';

		
function imgOut(imgName){
		  document.images[imgName].src = eval(imgName + "out.src");
		}
		function imgOver(imgName){
		  document.images[imgName].src = eval(imgName + "over.src");
		}