Animated Gif Image needed

I require an animated gif which will look similar to the JPG shown on this page which says "U COMMENT I FOLLOW" [login to view URL] I would like the gif to swap the comments "U COMMENT I FOLLOW" from top to bottom. Colour choice should be attention getting for my blog at http://EzyAs123.com. The graphic will be placed above the red NoFollow statement. ## Deliverables The effect I would like is similar to those old digital clocks where the numbers flipped over each other. I hope the description is understandable. I am open to idea for the design so please feel free to send me your comments.