OnPress...ease into place

I would like it so that when I click the “envelope” button… the actionscript makes the “businesscard” movieclip slide into the same x and y position as the “cardopen” movieclip.

my code isn’t working:

on(press){
businesscard._y-=(businesscard._y-cardopen._y)*25
businesscard._x-=(businesscard._x-cardopen._x)*25
}


though if I type the code without the *25
it works … it just snaps the card into position without any easing


any help please?

Thanks