Fade UILoader to 25%?

Hey Guys,
I’m trying to fade an instance of a UILoader from 100% to 25%. It jumps straight to 25% without the fade. what did I do wrong? any help would be so greatly appreciated.

briandrumpic_mc.alpha = 1;
this.addEventListener(Event.ENTER_FRAME, fadeOut);

function fadeOut(event:Event):void {
briandrumpic_mc.alpha = briandrumpic_mc.alpha -0.05;

if (briandrumpic_mc.alpha >= .25) {
briandrumpic_mc.alpha = .25;
this.removeEventListener(Event.ENTER_FRAME, fadeOut);
}

}