Large Forms

Complex form I'm developing has stopped validating.
error was at line 529 (I think) where validayious is trying to guess
error messages (no title attribute). I put dummy titles in the input tags
and now it's a different line (as below).

Only class used is required, required max-length_xx, and required max-length_xx.

Very strange. I'm using php fieldforwarder. Thread of forms starts here
http://www.yamnuska.com/bski-2/

then goes here etc.

http://www.yamnuska.com/dev/booking-1.php?departure_node=1&p15_...

Thanks for your help. Good script but all the php, xml etc is really getting to me.
Bye
Tim

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; SU 3.28; GTB6.5; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; Creative ZENcast v2.00.13)
Timestamp: Fri, 24 Sep 2010 09:28:02 UTC

Message: Object doesn't support this property or method
Line: 7
Char: 2668
Code: 0
URI: http://www.yamnuska.com/dev/validatious-custom-0.9.1.js