[JavaScript] Open in full page script dosent world

Hi group

I have a script that make my web page to open full res. window, it did work when i had IE7 but now with IE8 it dosent.
What can i do to make it work?
The web page is www.adworldcorp.com and www.acabadosrusticospanama.com
Both page have the same script and both dont work.

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