Help with preloader

This is my preloder:

"
onClipEvent (enterFrame) {
loading = _parent.getBytesLoaded();
total = _parent.getBytesTotal();
percent -= (percent-((loading/total)100)).25;
per = int(percent);
percentage = per+"%";
loadBar._width = per;
if (percent>99) {
_parent.gotoAndStop(2);
}
}
"

Where is the problem

Its load OK. But i would like to make such preloader that preload 1 time than the next time you load same SWF it open without loading.
What i have to do.