Display a disclaimer "above" the content of the website

Dear freelancers, I have a website. I want that every visitor has to accept a disclaimer before he can see my content. No matter whether the visitor enters on the start page or a subpage. When the user has accepted the disclaimer once, he doesn't need to accept again when he hits other subpages. It's a static HTML based page. It could be done by a javascript that makes everything black and displays a window which looks like this: ________________________________________ | Disclaimer Text Disclaimer Text Disclaimer Text | | Disclaimer Text Disclaimer Text Disclaimer Text | | | | EXIT | | | | ENTER (en) ENTER (de) | ---------------------------------------------------------------- That the user has to accept the disclaimer only once, could be realised with a cookie placed by JS. The english version differs from the german one only with an "e" extra in each HTML file name (german: [login to view URL] english: [login to view URL]) I provide the disclaimer text, of course. I welcome your bids. Let me know for any questions/comments, I'm here to help you out anytime.