This self-grading JavaScript Quiz will allow your visitors to test their knowledge of a subject related to your site. And not only does this script automatically calculate a letter grade, but it also lists references for wrong answers and only allows one attempt for each question. This particular JavaScript Self-Grading Quiz happens to be about the bible, but you can change it to whatever subject you desire simply by editing the code. You can also increase or decrease the number of questions as needed. Note that this script includes the use of arrays and may only work with netscape 3.0 or higher or Internet Explorer 4.0 or higher.