var interval = 2500;
  	var random_display = 0;
  	var imageDir = "../img/seniorDay2009/";
    var imageNum = 0;
  	imageArray = new Array();
    	imageArray[imageNum++] = new imageItem(imageDir + "00.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "01.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "02.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "03.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "04.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "05.jpg");
      imageArray[imageNum++] = new imageItem(imageDir + "06.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "07.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "08.jpg");
      imageArray[imageNum++] = new imageItem(imageDir + "09.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "10.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "11.jpg");
      imageArray[imageNum++] = new imageItem(imageDir + "13.jpg");
    	imageArray[imageNum++] = new imageItem(imageDir + "14.jpg");
    	
    var totalImages = imageArray.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 randNum(x, y) {
    		var range = y - x + 1;
    		return Math.floor(Math.random() * range) + x;
  	   }
  	   
  	function getNextImage() {
    		if (random_display) {
    			imageNum = randNum(0, totalImages-1);
        }
    		else {
    		 imageNum = (imageNum+1) % totalImages;
  		  }
       var new_image = get_ImageItemLocation(imageArray[imageNum]);
  	   return(new_image);
  	 }
  
  	function getPrevImage() {
  		imageNum = (imageNum-1) % totalImages;
  		var new_image = get_ImageItemLocation(imageArray[imageNum]);
  		return(new_image);
  	}
  	
  	function prevImage(place) {
  		var new_image = getPrevImage();
  		document[place].src = new_image;
  	}
  
    function switchImage(place) {
  		var new_image = getNextImage();
  		document[place].src = new_image;
  		var recur_call = "switchImage('"+place+"')";
  		timerID = setTimeout(recur_call, interval);
    }