AJAX rating, cookie based list, AJAX comments

Please do not bid if you are too busy and can't finish the work in a few days time. It is not much work for someone who is familiar with AJAX. ------------------------------------------------------------------- I am searching for someone to fix some issues on my website - [login to view URL] things that need to be fixed: - rating system - rating needs to change instantly (see how metacafe does it) - only one voter per user per ip - cookie based system - add to my channels list does not work as it should - should be a cookie based system - delete function needs to be implemented too - a minor fix for a script on a Videos site of the website - by default all categories need to be selected - and one other small problem Please indicate when you can start and how many hours / days will you need to finish the job thanks for bidding