Manually debugging a mobile webpage is a lot of effort. You need to run an emulator and it is usually slow and debugging tools are not existing. Opera has a solution for this problem: Opera Mobile Emulator. It is quite fast to run and you may test on many settings.
Furthermore It has Dragon fly support for remote debugging. It is explained
here. But I would like to give a quick review. First you need to run opera web browser and open Dragonfly with ctrl+shift+I and start listening desired socket. Then you need to open Opera Mobile Emulator and enter opera:debug to address bar. You will see following screen:
then connect to Dragonfly. And then type address of the webpage you need to test to same tab and you will see data goes through Dragonfly. Great!
References:
http://www.opera.com/dragonfly/documentation/remote/
