function laden(){
	if(document.images)
	{
	var nav = new Array("laender.gif","laender_d.gif","projekte.gif","projekte_d.gif","treffpt.gif","treffpt_d.gif","ueber.gif","ueber_d.gif","undich.gif","undich_d.gif");
	var bild = new Array(10);
	for (i=0; i<10; i++){
		bild[i] = new Image(); bild[i].src = "img/nav/"+nav[i]+".gif";}	
	}
	
	if(document.images)
	{
	var nav = new Array("navi-eco.jpg","navi-ich.jpg","navi-land.jpg","navi-pro.jpg","navi-treff.jpg");
	var bild = new Array(5);
	for (i=0; i<5; i++){
		bild[i+10] = new Image(); bild[i+10].src = "img/nav/"+nav[i+10]+".jpg";}	
	}
}