Tab Index problem

Hi, can anyone help me work out why tabIndex ignores the order i set after it reaches a movie clip.

I have four input text fileds. and their tabIndex’s are set from 1-4 i then have a movie clip as tabIndex 5 and another movie clip as tabIndex 6. For some reason when tabbing it only gets as far as the the first movie clip (tabIndex5) but won’t go any further.

anyone got any ideas, it’s driving me insane!

i’ve attached the fla.

Thanks in advance.