A simple question about preloaders

Hello there.

Sorry if this is in the wrong section, I really wasn’t sure where to post it.

Basically what I want to know is if this piece of code (which I got from a tutorial here at Kirupa) will make sure that all movieclips have loaded aswell as the all the frames on the timeline. I couldnt see any mention of that in the tutorial.

if (_framesloaded>=_totalframes) {
 gotoAndPlay (2);
} else {
 gotoAndPlay (1);
}

If not, I don’t suppose anyone could point me in the right direction for finding a preloader that loads everybit of the .swf before it starts?

thanks