I just learned about some new Web Controls from Telerik tonight, that are HTML5, CSS3 and JavaSript supported. They have a new suite of web controls in Beta that are not specifically .Net controls. Which is nice, as Telerik is known for having a really good, if not the best suite of .Net controls you can get. These new web controls scale from desktop to mobile, and support the 4 main mobile platforms; iOS, Android, Blackberry and WebOS. They also support the top 5 browsers; Mozilla, Safari, Chrome, IE and Opera.
You can check out these new controls at Kendo UI – http://www.kendoui.com/