After my recent research into HTML5 ad banners as an alternative to flash, i've come across Adobe Edge which Adobe have recently previewed.

Adobe have described Edge as "A new web motion and interactive design tool". Which basicaly means you can create animations using HTML5, javascript and CSS3, using a handy timeline tool to make it easier. More info on it can be found here http://labs.adobe.com/technologies/edge/ and there's a preview video of it in action here http://youtu.be/8FnNtX73v8k.

Edge seems like the ideal way for me to recreate an existing flash ad banner in HTML5 and CSS3, rather than doing it all manually from scrath. So i'm going to give it a whirl and see what it will allow me to do.