var bild = new Array(4);
  bild[0] = "01.jpg";
  bild[1] = "10.jpg";
  bild[2] = "02.jpg";
  bild[3] = "03.jpg";
  bild[4] = "04.jpg";
  bild[5] = "05.jpg";
  bild[6] = "06.jpg";
  bild[7] = "07.jpg";
  bild[8] = "08.jpg";
  bild[9] = "09.jpg";
  nr=Math.round(Math.random()*9-0.5);

	
	document.writeln('<style type=text/css>');
	document.writeln('body ');
	document.writeln('{background-image:url('+bild[nr]+');background-repeat:no-repeat;background-position:center;background-repeat:no-repeat;}');

	document.writeln('</style>');