Create 'slide up' box(repost)

I need some javascript that will slide up an information box above the current page, like the one at <a href="[login to view URL]">[login to view URL]</a>. It must be optimized for size and work with the 2 latest generations of IE, Firefox and Opera and the newest version of Chrome. **This is a re-post. The previously selected developer ripped the code directly from [login to view URL] which is of course not acceptable!** Only place a bid on this project if you can implement this without stealing others code, please.