Page 2. Animation + URL change.

We need to make an animation of the page opening.
Please look at the screenshots -- I made a few shots of that animation.
So when I click on the Box, the right border of the page moved to left.
When I click on the left border -- the right border will go back and open the Frames with boxes.
And this is one very important thing : We need that this new page (when Right border moved to the left and closed all the Frames) will have a unique URl. And when you hit Back button it will play the animation of the page opening and come back to the main URL.
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Ok, so here is all the process one more time.
1. I opened www.scrollblog1234.com and see the Main page with Frames and Boxes.
2. I move the mouse to the Box that I need. The box frame lighted up.
3. I press the mouse and see animation : right border moved to the left and close all the frames. The website address has changed to www.scrollblog1234.com/1box.html
4. When I hit back (or click on the left border) I could see the animation : the right border has moved back and open the Frames with boxes. The website address changed to www.scrollblog1234.com
Extra notes: