Pretty neat, but typically in a nicely scripted API like this, there's a mechanism for writing HTML to the page, whether via document.write or other.
Wouldn't it be much nicer to see code that looked like this?
var images=new imageListInitalize();
The writeAll() method would be easy to make. You could also provide DOM-based options for post-load appending, or a method-or two for writing single images or images in a specified pattern or to a certian limit.