How to make the top jquery slider move from bottom to top?

I came across this amazing slider, but I would like to open it from the bottom up, I tried a bunch of things, but nothing works for me. I changed the css box (page container) from top to bottom: 0px and gave it margin-bottom -200. I managed to turn it over, but it still opens from top to bottom.

Here is a demo file: slidepanel.com

I would be grateful for some recommendations.

Thank. Sophie