Password Entry

I have attached a simple file that I can’t get to work.

I can use simple imput fields and use if () to check them easy enough.

But with this I have a drop down box for user names,
and a input component set as a password field.

I just need a simple

 if (user == "Cathy" && pass =="cat"){ 

But I dont know how to check == against the fields in the drop down list and text field.

Any help would be much appreciated…

Link to .fla

I know it is not secure, and I will be changing it to a PHP mysql set up but for the time being it will do.