[TxMt] Tab size dependent on the file mode?

[Lars Pind]

I have a project where the .tcl files traditionally uses and 
indentation of 4, and the .adp (html) files use indentation of 2.

Is it possible to set TextMate up to set the tab size dependent on the 
mode? So far I've either stuck with a tabsize of 2 for everything, and 
then hit once more on the TAB key in tcl, or I've been switching back 
and forth, both of which are suboptimal.

Thanks,
/Lars