Dynamic Drive PHP Gallery Script Issue

[audiologicnet]

I am having a (hopefully) small problem with the Dynamic Drive PHP Photo Album Script

I am editing the following site:
SWF Photo
Please don't comment on how bad the code is, I am editing a previous designers work, only to update the gallery.

As you can see the gallery is forming one column. The option to change this is as follows:
var dimension="3x2" (i.e 3 columns, 2 rows)

I have been messing with it for an hour or so and I can't seem to make it budge....Can anyone see why this is not working?

All code can be viewed by source, there is no external PHP.

Please help!

Thanks!!