I need an information collection form done for a network of sites I'm putting together.
I need the form to store information as the surfer enters it and tabs to the next field, not waiting for them to hit "Submit" at the end of the form. It will have to collect all of the information necessary for CanSpam compliance as well.
This form will also be dynamic, in that when they click "I'm interested in...", another sub-form will open below requesting more information. If they click multiple options and it open multiple sub-forms, the page will need to be flexible to accomodate them all and be secure and reliable in all browsers and all operating systems.
The form should be smooth, seamless and SEO well too (that's why I'm asking that the page be done in CSS and from what I'm told, Ajax is the best choice for the form itself.
Please leave examples of similar work in your bids and give me an idea of not only what you'd ask to do it, but also exactly how long it will take you to do. There may be additional fields needed later, please also include what updates would cost.