Javascript file loading Images in wordpress

Hi all I have a problem with a jquery plugin that I cannot solve.

The code below is what finds the images to load

.attr('src', 'images/' + button + '.png')

In wordpress this doesn’t work and i have tried:
/images/
/wp-content/themese/yada/yada
http://sitename.com/images

And none of them are working. I am really stuck on this.

you can find the plugin here

As anyone else had issues with javascript loading images in WP?

Thanks