can't work this one out. simply jquery/ajax effect not working

[unwashed potato!]

http://www.cleansurrey.co.uk/contact.php

can someone check my site and see why this may not be showing the expected effect. If you go to the link above you will get the direct link to the contact page. if you submit the form jquery will check it, add any styling required for fields incorrectly filled out however the effects aren't shown.

if you then go to the site without /contact.php and click the contact link which will slide the form into view, fill it out and click submit it works fine.

i'm clueless as to why this is happening as both pages use the same form and the same .js file for the effects so why does one show it and the other doesn't?

 

[unwashed potato!]

anyone got a clue?

 

[unwashed potato!]

that's weird. the clone is not something i've put there but jquery and i'm unsure why.

edit: turns out the slider effect was causing the contact and feedback page to be cloned. still unsure why but i've solved it by saying if on contact or testimonial page don't include the slider effect.