var imagenumber = 2 ; //Anzahl der Grafiken
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "http://www.wetter.com/home/woys/woys.php?ddd49fbf18376f0a77bb0dea3d5d5c54,C,1,PLZ,1068"
images[2] = "http://www.wetter.com/home/woys/woys.php?ddd49fbf18376f0a77bb0dea3d5d5c54,C,1,PLZ,1"
var image = images[rand1]

links = new Array
links[1] = "http://www.wetter.com/home/extern/location.php?type=PLZ&id=1068"
links[2] = "http://www.wetter.com/home/extern/location.php?type=PLZ&id=1"
var link = links[rand1]

document.write('<A HREF="' + link + '"><IMG SRC="' + image + '" border="0" width="150" height="90"></a>')