quickest way to find broken DIVs

Question

I have a site that is calling a great deal of HTML from a third party source. Trouble is, I think they are returning malformed code to me.

I need a quick way to find additional DIV closures, is this possible?

Answer 1

create a page calling just the provided code then validate it - W3C Validator

Answer 2

Just install View shource chart add on for firefox and u can find the source generated in a formatted manner which is easy to find the unwanted tags..