var banner_interval;
 	var interval = 7000;
 	var imageNum = 0;
	imageArray = new Array();
	var imageDir = "images/slideshow/";
	
	imageArray[imageNum++] = new imageItem(imageDir + "slide1.jpg");
	imageArray[imageNum++] = new imageItem(imageDir + "slide2.jpg");
	imageArray[imageNum++] = new imageItem(imageDir + "slide3.jpg");
	imageArray[imageNum++] = new imageItem(imageDir + "slide4.jpg");
	imageArray[imageNum++] = new imageItem(imageDir + "slide5.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 getNextImage() {
	imageNum = (imageNum+1) % totalImages;
	var new_image = get_ImageItemLocation(imageArray[imageNum]);
	return(new_image);
	}
	 function switchImage(place) {
	
	var new_image = getNextImage();
	document[place].src = new_image;
	var recur_call = "switchImage('"+place+"')";
	timerID = setTimeout(recur_call, interval);
	}