Support for horizontal tabs

Thank you for fixing it.

I am using the field_group Module for horizontal-tabs.

It works, thanks. But i found another issue, which may be interesting for you.

In the code, there is this block:

// Same for horizontal tabs
fieldset = $(element).parents('fieldset.horizontal-tabs-pane');
if (fieldset.size() && fieldset.find('.' + errorClass).size() == 0) {
  tab = self.findHorizontalTab(element);
  if (tab) {
    tab.removeClass(errorClass).addClass(validClass);
  }
}

When validating, this code checks for fields inside the tab, which have the error class. If you already validated, there is the error message shown. This message has also the class "error" and is only hidden, when the field is valid. The code above does select these error messages and does not go into the first IF.

I figured out, that appending .not('label') onto the .find('.' + errorClass) does the trick.
Is this a good method or do you have a better one?