[AS2] Help loading external swf as fullscreen

I am building a site that has a slideshow presentation. This slideshow, I built as an external movieclip. When the user clicks on the navigation button to view the slideshow, i need it to load as fullscreen and then when the user clicks the navigation to go somewhere else, i need it to not be fullscreen.

Can anyone help me? My deadline is today by 1PM! AAHHH!