Button actions

okay, i have code on my buttons like this, to load external .swf’s into MCs…

[AS]

on(release) {

_root.mov1.loadMovie(“pictures1.swf”);
_root.mov2.loadMovie(“pictures2.swf”);
_root.mov3.loadMovie(“pictures3.swf”);

}

[/AS]

What i want to know, is if i can add something to that, so that it won’t reload the pictures section, since if it is already there…