Validation - user needs to complete at least one field of a table...

Hi All

I have a table, which is populated by the user using dropdowns. I have some javascript which auto populates to the right of the users selection.

This all works fine however I now need to add some validation to check that the user has completed at least one field on one line.

The table is below

So the validation (mandatory) needs to error unless at least one field is populated (in the dropdown section ie not 'Notes' or 'Date')

The pdf can be found here:

Dropbox - 207 For Forum.pdf

Any suggestions on the best method / cleanest code to make this happen?

Cheers

Ellis