How To Create Several Crossfade Slideshows For Page

I am new to Javascript, but am trying to work with a bit of script I found online to create a crossfade slideshow for my page. The problem I am having is that I want to have several slideshows on my page. On it's own, a single slideshow works fine but when I add a second (and do my best to hack the code with my limited knowledge) only one slideshow will work, or sometimes neither. I found the article from this site that explained about event conflict, but the example used looked quite a bit different to mine.

Here is the js file I started with
window.addEventListener?window.addEventListener('load',so_init,false):window.attachEvent('onload',so _init);
var d=document, imgs = new Array(), zInterval = null, current=0, pause=false;
function so_init()
{
if(!d.getElementById || !d.createElement)return; .....
This uses a couple of CSS files and then you just add a div=rotator on the html to add the object and then the images and links within that div.