Simple ajax form validation and submition

I need a simple contact form with validation and email submition. Simple fields: name, email, message. The form is placed in a single-paged website, so must be validated in this same page (with a possible fallback for disabled javascript). I have the HTML page already OK, just need the for to work. The jobs must be done within the next 1 hour, and I myself will put it in my host. So, any problems I have until this implementation, you must be online to solve the problem. The budget is also fixed: $12 for the job done. If you read it untill here, write this in the beggining of your bid: "Read it two times!", otherwise your bid will be disconsidered. Thanks,