
slideShowProInstance.previousGalleryScreen();
None.
Nothing.
Method; instructs SlideShowPro to load the gallery screen before the current one in view (if available).
This example assigns previousGalleryScreen to the onRelease method of a movie clip with an instance name of "next_bttn":
next_bttn.onRelease = function() {
my_ssp.previousGalleryScreen();
}

