var v_interval = 2.5; // delay between rotating images (in seconds)
var random_display = 0; // 0 = no, 1 = yes
v_interval *= 1000;

var video_index = 0;					
video_list = new Array();
var number_of_video = 0;


				
function imageItem(image_location) {
	this.image_item = new Image();
	this.image_item.src = image_location;
}
				
function get_ImageItemLocation(imageObject) {
	
	return(imageObject.image_item.src);
}
				
function generate(x, y) {
	var range = y - x + 1;
	return Math.floor(Math.random() * range) + x;
}
				
function getNextVideo(videolist) {    
	if (random_display) {
		video_index = generate(0, number_of_video-1);
	}
	else {
		video_index = (video_index+1) % number_of_video;
	}
	
	var new_video = get_ImageItemLocation(videolist[video_index]);
	return(new_video);
}

// fuer die Videos 
function rotateVideo(place) {
	var new_video = getNextVideo(video_list);
	document[place].src = new_video;
	var recur_call = "rotateVideo('"+place+"')";
	setTimeout(recur_call, v_interval);
}