The heart of any good web app is it's offline capability and JavaScript functionality. Currently what tools and wrappers are availability for the desktop web app maker to cross over to the mobile market? What would be the necessary read ups for such a team?
Clarifications: I am searching for information on how much offline capabilities and JavaScript functionality has improved on the Mobile phones. I know that the term 'mobile phones' are too broad. I am aware of offline solutions like Gears, Adobe AIR, Silverlight etc. But are these really for mobile phones?
How much has JavaScript improved on Mobile Webkit Browsers such as iPhone and Symbians? OperaMini also claims some JavaScript functionality.