I think there's a need for a high end cross platform toolkit/framework for developing web apps that provide some high-end stuff for iphone and android but also

I think there's a need for a high end cross platform toolkit/framework for developing web apps that provide some high-end stuff for iphone and android but also can degrade gracefully for "phone" phones that have crappier browsers. Ideally this would work like unobtrusive javascript, instead of having to have two views. I'm currently investigating building a better mobile web presence for an application. The solution for us so far has been to mangle WURFL to a faster format and use that to detect properties of the current device from the UserAgent (width/height mainly). The WURFL way is to do a lehvenstein calculation on the current user agent versus all the agents in the db, pretty expensive computation. This puts the crappiest phones first, because the web we build is very restricted by the poor phones, but the truth is that iPhone/Android is rapidly approaching 50%, because they are more likely to actually use the mobile internet. To build this could quite possibly be a javascript layer on top of a basic REST structure.