How to place a javascript script on server

Hi

I have a javascript "widget" that loops through a series of quotations, showing a new quote with each page refresh. I have it running in the right sidebar on an html page.

A couple of bloggers have asked if they can use it too. So I want to place the script on my server so i can control/update the content, and offer a simple line of code so bloggers and webmasters can place it anywhere on their site, and call the javascript from my server.

Any ideas on a simple solution would be appreciated. My host is a Small orange, so i think I have access to all the php etc (even though I don't know what to do with any of the capabilities!)

thanks