size1 = "Blank";
size2 = "Blank";
size3 = "Blank";
size4 = "Blank";
size5 = "Blank";

function testButton(form) {
    for (Count = 0; Count < 5; Count++) {
        if (form.ANSWER1[Count].checked)
	size1 = Count;
	if (form.ANSWER2[Count].checked)
	size2 = Count;
	if (form.ANSWER3[Count].checked)
	size3 = Count;
	if (form.ANSWER4[Count].checked)
	size4 = Count;
	if (form.ANSWER5[Count].checked)
	size5 = Count;
    }
    
    RightAnswer1 = 3;
    RightAnswer2 = 1;
    RightAnswer3 = 2;
    RightAnswer4 = 0;
    RightAnswer5 = 4;
    
    NumberCorrect = 0;
    AnswerPage = 'black_hole_solution.html';
    
    if (size1 == RightAnswer1) {
        NumberCorrect++;
    }
    if (size2 == RightAnswer2) {
        NumberCorrect++;
    }
    if (size3 == RightAnswer3) {
        NumberCorrect++;
    }
    if (size4 == RightAnswer4) {
        NumberCorrect++;
    }
    if (size5 == RightAnswer5) {
        NumberCorrect++;
    }
    
    alert ("You answered " +NumberCorrect + " out of 5 questions correctly!");
    if (NumberCorrect==5) {
      location = AnswerPage; 
    }
}

    
function answerButton(form) {
    for (Count = 0; Count < 5; Count++) {
        if (form.ANSWER1[Count].checked)
	size1 = Count;
	if (form.ANSWER2[Count].checked)
	size2 = Count;
	if (form.ANSWER3[Count].checked)
	size3 = Count;
	if (form.ANSWER4[Count].checked)
	size4 = Count;
	if (form.ANSWER5[Count].checked)
	size5 = Count;
    }
    
    RightAnswer1 = 3;
    RightAnswer2 = 1;
    RightAnswer3 = 2;
    RightAnswer4 = 0;
    RightAnswer5 = 4;
    
    NumberCorrect = 0;
    AnswerPage = 'black_hole_solution.html';
    
    if (size1 == RightAnswer1) {
        NumberCorrect++;
    }
    if (size2 == RightAnswer2) {
        NumberCorrect++;
    }
    if (size3 == RightAnswer3) {
        NumberCorrect++;
    }
    if (size4 == RightAnswer4) {
        NumberCorrect++;
    }
    if (size5 == RightAnswer5) {
        NumberCorrect++;
    }
    
    //    alert ("You answered " +NumberCorrect + " out of 5 questions correctly!");
    location = AnswerPage; 
}