We are having Zimbra 5.0.9. We plan to use Zimbra Mobile Web Client for real time access. But we need to define browser requirements for mobile.
My question is what features does mobile browser require? I found on the web that any HTML based browser is enough, but i found that it would require following capabilities
1) XHTML 1.0
2) CSS2
3) Javascript

Do mobile browser with following specification required? What version (1.5, 1.6 etc.) of JavaScript support is required,

Is XHTML 1.0 and CSS2 enough?