bg1 = new Image();
bg1.src = "pic/bg_01f.jpg";
bg2 = new Image();
bg2.src = "pic/bg_02f.jpg";
bg3 = new Image();
bg3.src = "pic/bg_03f.jpg";
bg4 = new Image();
bg4.src = "pic/bg_04f.jpg";
bg5 = new Image();
bg5.src = "pic/bg_05f.jpg";

bilder = 5;
intervall = 6;
bildnummer = 1;

function slideshow(area1)
{
	setTimeout("slideshow(\"" + area1 + "\")", intervall*1000);
	document.getElementById(area1).style.backgroundImage='url(pic/bg_0' + bildnummer + 'f.jpg)';
	if (bildnummer >= 5) {
		bildnummer = 1;
	}
	else {
		bildnummer++;
	}
}