Flash Login Page

Hello friends,

I have created a movie which have a login page.The problem is …
when i enter user name and then press ‘TAB’ the selection is going to another component then after pressing one more ‘TAB’ focus comes to password field.I want the focus come directly to pass after username field.

also i have a login button when clicked evaluates the usename and pass…
so i want the button to function when i PRESS enter.
plz help…
thnks.