var bilder = new Array();

bilder[0] = "images/background/natur50.jpg";
bilder[1] = "images/background/natur01.jpg";
bilder[2] = "images/background/natur02.jpg";
bilder[3] = "images/background/natur03.jpg";
bilder[4] = "images/background/natur04.jpg";
bilder[5] = "images/background/natur05.jpg";
bilder[6] = "images/background/natur06.jpg";
bilder[7] = "images/background/natur07.jpg";
bilder[8] = "images/background/natur08.jpg";
bilder[9] = "images/background/natur09.jpg";
bilder[10] = "images/background/natur10.jpg";
bilder[11] = "images/background/natur11.jpg";
bilder[12] = "images/background/natur12.jpg";
bilder[13] = "images/background/natur13.jpg";
bilder[14] = "images/background/natur14.jpg";
bilder[15] = "images/background/natur15.jpg";
bilder[16] = "images/background/natur16.jpg";
bilder[17] = "images/background/natur17.jpg";
bilder[18] = "images/background/natur18.jpg";
bilder[19] = "images/background/natur19.jpg";
bilder[20] = "images/background/natur20.jpg";
bilder[21] = "images/background/natur21.jpg";
bilder[22] = "images/background/natur22.jpg";
bilder[23] = "images/background/natur23.jpg";
bilder[24] = "images/background/natur24.jpg";
bilder[25] = "images/background/natur25.jpg";
bilder[26] = "images/background/natur26.jpg";
bilder[27] = "images/background/natur27.jpg";
bilder[28] = "images/background/natur28.jpg";
bilder[29] = "images/background/natur29.jpg";
bilder[30] = "images/background/natur30.jpg";
bilder[31] = "images/background/natur31.jpg";
bilder[32] = "images/background/natur32.jpg";
bilder[33] = "images/background/natur33.jpg";
bilder[34] = "images/background/natur34.jpg";
bilder[35] = "images/background/natur35.jpg";
bilder[36] = "images/background/natur36.jpg";
bilder[37] = "images/background/natur37.jpg";
bilder[38] = "images/background/natur38.jpg";
bilder[39] = "images/background/natur39.jpg";
bilder[40] = "images/background/natur40.jpg";
bilder[41] = "images/background/natur41.jpg";
bilder[42] = "images/background/natur42.jpg";
bilder[43] = "images/background/natur43.jpg";
bilder[44] = "images/background/natur44.jpg";
bilder[45] = "images/background/natur45.jpg";
bilder[46] = "images/background/natur46.jpg";
bilder[47] = "images/background/natur47.jpg";
bilder[48] = "images/background/natur48.jpg";
bilder[49] = "images/background/natur49.jpg";


var timer = 120000; <!--Millisekunden-->
var arraylaenge = bilder.length;
var index = Math.floor(Math.random() * arraylaenge);
var Bildstring = '<img  id="bgImg" src="' + bilder[index] + '" width="100%" height="100%"/>';

function Bildwechsel () {
if (index == arraylaenge-1) {
index = 0;
} else {
index++;
}
Bildstring = '<img id="bgImg" src="' + bilder[index] + '" width="100%" height="100%"/>';
document.getElementById("Bild").innerHTML = Bildstring;
setTimeout("Bildwechsel()", timer);
}

function Bildanzeige () {
document.getElementById("Bild").innerHTML = Bildstring;
Bildwechsel();
}