Ajax PHP Quiz platform needed

Looking for a custom php - possibly ajax quix platform to be developed, the requirements are as follows: Simple interface, theme will be applied later. No login or user management needed, this already exists and will be aplied later, so ids must be relevant taking from my current db. Needed for quiz: - ask any kind of question (true / false, multiple choice, short answer, essay, questions with more than one correct answer); - choose how to mark each question (for example, 2 points for a correct answer, 0.5 points for a partially correct answer, and 0 for an incorrect answer); - format the text, add graphics, formulas, animation, audio and video files; - create a bank of questions which can be randomly displayed per test (example 50 questions in bank, 20 to be displayed at random) import questions from excel documents; - place an introductory text at the start of the test or before any question also at the end of test for pass and not pass; - shuffle questions / answers; - display one question per page; - assign a test to a certain group of users; - automatically generate test results to PDF on success and fail; - View how ofton each test has been used; - results of each test must be added to mysql db Some ideas for the test as it should be: [login to view URL] - This is perfect and I love it, just the price is out of my budget, Quiz must be similiar. [login to view URL] - Here I like the simplicity of the test, so a mod of this would be fine, just adding the extras! More info and current DB will be supplied to winner. If you dont understand my needs, or think you may have difficulty then do not apply. Payment on completion and test, ensuring it works with my current db.