/*
Original: Robert Bui (astrogate@hotmail.com)
Web Site: http://astrogate.virtualave.net
This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
*/
<!-- //Begin
var interval = 5500; // delay between rotating images (in milliseconds)
var random_display = 1; // 0 = no, 1 = yes
var image_index = 0;
image_list = new Array();
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/coppercluster.png");
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/ESMS_Derek.png");
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/ubiqNMR.png");
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/LaserLab_Justin.png");
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/Pdphosphonate.png");
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/McGuire_respic.ill.png");
image_list[image_index++] = new imageItem("Images/Depts/Chemistry/AnalytLab_CE.png");
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);
}// End -->