How to force the browser to go fullscreen in SuccessFactors?

Hi folks,
I have some severe problem with my Captivate content displaying in Successfactors LMS.

SF opens the content in a new 800x600 window and I need a script to force this window to an bigger size. I know that this must work somehow, because we have other content (not made with Captivate), which actually DOES resize the window.  I´ve tried to locate the responsible script snippet, but it does not work with my Captivate content.

I am using Captivate Classic, publishing in scalable HTML5. Hope someone can help me out ...

Thanks in advance!