jquery mobile 1.4.4 custom build css

jquery mobile 1.4.4 custom build css

Hi:

Has anyone tried to build custom jquery mobile? As I understand that one needs two css files
theme and structure. If that's true, the combined theme and structure css files should be around the same size as the one in the jquery mobile non-custom build version. But I looked at the non-custom built jquery mobile.
the jquery.mobile-1.4.4.css is a lot larger than the sum of jquery.mobile.theme-1.4.4.css and jquery.mobile.structure-1.4.4.css. Am I missing something?

So far I have not been able to get a custom built version of jquery mobile to work. Has anyone had any success? Thanks a lot in advance.

ftc