Projector file issue

hi guys, long time no post. so ive got this issue with a proector file iv’e created. when i try to use:
fscommand(“fullscreen”, “true”);

when the file is opened its definately full screen but theres no way to close it unless you hit escape. its like those annoying popups you get where theres no “x” in the upper right hand side of the window. so im wondering if theres a way i can tell the projector file to open up at like 90 percent in the center of the screen…any ideas?