Implementing google adwords conversion code

Hello everyone. My task is quite simple. What needs to be done: i have a website on which i use third party form (which is closed and can be modified from our side). What i need you is to implement google adwords conversion code the way that it would be triggered everytime the form is submitted. So basically whenever user fill in all the data and press the submit button, conversion code should be activated. As i said above there is no option to modify the from (third party) so you need to find another solution (ex: some change that happens after the form is submitted). For skilled people it should be 5 minute job so please bid adequatly :-) I will highly prefer people with some experience. Thank you for bidding. I can provide more information via PM.