eCart - "invalid Zip code"

Hello

Not sure if this is in the right forum - if not, apologies!

On submitting the checkout page for this site
kelpiejewellery.co.uk/
I'm getting a Zip Code validation problem. I've tested both UK and USA addresses.

This is a little worrying as the site has just gone live.
I did extensive testing before the site went live, and everything was working fine. I launched it this evening (this simply involved moving the domain to the new hosting package where the files had been uploaded for testing purposes), and processed another order (just to make sure!) and discovered the error.

I'd be grateful if you could help me find out what's wrong, before someone tries to place an order and fails at this hurdle.

I've attached the checkout.php page for info.

The page no longer appears to validate, although I'm sure it did previously. Maybe the W3.org validator is still looking at the old file location...

Many thanks in advance!
Alistair

Update: The page now validates XHTML 1.0 Transitional, as I knew it should.

But still no joy with the OP issue, i.e. why the Zip Code entry doesn't pass server validation.

I've removed the section "WAValidateZC(document.getElementById('ecart_checkout_form').firstname,'- Invalid zip code',true,true,true,true,'',document.getElementById('ecart_checkout_form').firstname,0,true);" from the form, in order to allow the checkout form to function.

I'd still like to get this working properly though.

Any ideas?
Thanks!

this code:
WAValidateZC(document.getElementById('ecart_check out_form').firstname,'- Invalid zip code',true,true,true,true,'',document.getElementBy Id('ecart_checkout_form').firstname,0,true);


is applying zip code validation to the firstname form field, not the zip code form field.

Thanks, Jason.

I'd seen that the code referred to firstname, but wasn't sure about what to do, and didn't want to break it any more :-)

It now works fine. And I've learned some more too!