saguaros I'm not sure I understand. As far as I figure there's no set size for the squares. When working correctly (as the four squares under "Resources" seem to do) they are resizing automatically, depending on the screen width.
The image we're using is exactly the same size as the default/demo template, yet the slideshow is not resizing correctly. The only difference in the code seems to come from the "element.style" (but I can't find the source).