Code:
<html>
<body>
<form name="myForm">
 Question 1: Which of these is a letter?<br>
 <input type="radio" name="q1" value="correct">A<br>
 <input type="radio" name="q1">1<br>
 <input type="radio" name="q1">#<br>
 <input type="radio" name="q1">None of the Above<br>
 <br>
 <br>
 Question 2: Which of these is a number?<br>
 <input type="radio" name="q2">A<br>
 <input type="radio" name="q2" value="correct">1<br>
 <input type="radio" name="q2">#<br>
 <input type="radio" name="q2">None of the Above<br>
 <br>
 <br>
 Question 3: Which of these is a symbol?<br>
 <input type="radio" name="q3">A<br>
 <input type="radio" name="q3">1<br>
 <input type="radio" name="q3" value="correct">#<br>
 <input type="radio" name="q3">None of the Above<br>
 <br>
 <br>
 Question 4: Which of these is a comma?<br>
 <input type="radio" name="q4">A<br>
 <input type="radio" name="q4">1<br>
 <input type="radio" name="q4">#<br>
 <input type="radio" name="q4" value="correct">None of the Above<br>
 <br>
 <br>
 
 <a href="#" onclick="return checkAnswers()">Get Certificate</a>
 
</form>
</body>

</html>
<script language="JavaScript">

var allQuestions = new Array(document.myForm.q1,
                            document.myForm.q2,
                            document.myForm.q3,
                            document.myForm.q4);


function checkAnswers(){
 

var totalScore = 0;

  
   for (var i = 0; i < allQuestions.length; i++) {

     if (allQuestions[i].value == "correct" && allQuestions[i].checked == true) {
       totalScore++;
    
   }

 }

 if ((totalScore/allQuestions.length) >= .75) {

   alert("Congratulations! Your score of " + totalScore +
         " out of " + allQuestions.length + " is good enough to proceed!");

   window.location.href = "certificate.html";
 }
 else{
   
   alert("You must get at least 75% correct to move on!");
   return false;
 }
}
</script>
I think i have some problems with var totalScore. The code don't process on to certification.html page. Can someone help ?