How to get all fields that queued in ErrorTracking

[Ryan Pan]

Hi all,
    I may need an special validation on the html page.
    After the logical checking in background listener,I have to get all
error fields,focus on them,and change their background Color through
javascript.So the problem came.How can I locate to the every field with
error?

Note: I did not use any validator component of Tapestry.

Anybody who knows please kindly tell me how to achieve.


Thanks,
Ryan.