Small problem cant fix it

hey guys.
well i have two input text fields and they are user and password text fields and they are inside a movie clip called login_mc.
The code i use for the password and user works no problem its just that when they appear they allready have text written in them and that is as follows

_level0.login_mc.user thats what it says in the user input text field

_level0.login_mc.password and thats what it says in the password text field.

now is there ne way i can make it that it dosent say that stuff.
thanks for reading hope u can help