JQuery :: Photo Rotator - How To Add More Than One

I used the code here for my photo rotator: [URL]. It works when there's one rotator on the page, but I need to add a few and that does not work.
function theRotator() {
//Set the opacity of all images to 0
$('.photos img').css({opacity: 0.0});
//Get the first image and display it (gets set to full opacity)
$('.photos img:first').css({opacity: 1.0});
//Call the rotator function to run the slideshow, 4000 = change to next image after 4 seconds
setInterval('rotate()',4000);
} function rotate() {
//Get the first image
var current = ($('.photos img.show')? $('.photos img.show') : $('.photos img:first'));
var currentButton = ($('.photos a.active')? $('.photos a.active') : $('.photos a:first'));
//Get next image, when it reaches the end, rotate it back to the first image
var next = ((current.next().length) ? ((current.next().hasClass('show')) ? $('.photos img:first') :current.next()) : $('.photos img:first'));
var nextButton = ((currentButton.next().length) ? ((currentButton.next().hasClass('active')) ? $('.photos a:first') :currentButton.next()) : $('.photos a:first'));
//Set the fade in effect for the next image, the show class has higher z-index
next.css({opacity: 0.0})
.addClass('show')
.animate({opacity: 1.0}, 1000);
nextButton.addClass('active');
//Hide the current image
current.animate({opacity: 0.0}, 1000)
.removeClass('show');
currentButton.removeClass('active');
};
$(document).ready(function() {
//Load the slideshow
theRotator();});