[twill] How to follow image buttons?

[Manoj Gupta]

Hi,

I am using Twill for testing purpose, and no doubt It is easy to use, 
But I am facing some problems
in navigating the image button links. Am I missing something or Twill 
doesn't have this feature? Besides
of that, There are some tab feature, using images on the page. In those 
cases, I am unable to write scripts
to switch tabs. Help me.

Regards,
Manoj Gupta