var interval = 2.5; // Zeit zwischen dem Bildwechsel (in Sekunden)
  var random_display = 0; // 0 = aus, 1 = an
  interval *= 1000;

  var image_index = 0;
  image_list = new Array();
  image_list[image_index++] = new imageItem("images/change01.jpg");
  image_list[image_index++] = new imageItem("images/change02.jpg");
  image_list[image_index++] = new imageItem("images/change03.jpg");
  image_list[image_index++] = new imageItem("images/change04.jpg");
  image_list[image_index++] = new imageItem("images/change05.jpg");
  var number_of_image = image_list.length;
  
  function imageItem(image_location) 
  	{
  	this.image_item = new Image();
  	this.image_item.src = image_location;
  	}
	
  function get_ImageItemLocation(imageObj) 
  	{
  	return(imageObj.image_item.src)
  	}
	
  function generate(x, y) 
  	{
  	var range = y - x + 1;
  	return Math.floor(Math.random() * range) + x;
  	}
	
  function getNextImage() 
  	{
  	if (random_display)
		{
  		image_index = generate(0, number_of_image-1);
  		}
  	else 
		{
  		image_index = (image_index+1) % number_of_image;
  		}
  	var new_image = get_ImageItemLocation(image_list[image_index]);
  	return(new_image);
  	}
	
  function rotateImage(place) 
  	{
  	var new_image = getNextImage();
  	document[place].src = new_image;
  	var recur_call = "rotateImage('"+place+"')";
  	setTimeout(recur_call, interval);
  	}