size1 = "Blank";
size2 = "Blank";
size3 = "Blank";

function testButton() {
size1 = document.form.answer1.value - 0;
if (!size1) {size1 = "Blank";}
size2 = document.form.answer2.value - 0;
if (!size2) {size2 = "Blank";}
size3 = document.form.answer3.value - 0;
if (!size3) {size3 = "Blank";}
    
    RightAnswer1 = 78;
    RightAnswer2 = 120;
    RightAnswer3 = 82;
    
    NumberCorrect = 0;
    AnswerPage = 'cosmic_rays_solution.html';
    
    if (size1 == RightAnswer1) {
        NumberCorrect++;
    }
    if (size2 == RightAnswer2) {
        NumberCorrect++;
    }
    if (size3 == RightAnswer3) {
        NumberCorrect++;
    }
    
    alert ("You answered " +NumberCorrect + " out of the first 3 questions correctly!  Compare your answer to ours for the last one.");
    if (NumberCorrect==3) {
      location = AnswerPage; 
    }
}

    
function answerButton() {
size1 = document.form.answer1.value - 0;
if (!size1) {size1 = "Blank";}
size2 = document.form.answer2.value - 0;
if (!size2) {size2 = "Blank";}
size3 = document.form.answer3.value - 0;
if (!size3) {size3 = "Blank";}
    
    RightAnswer1 = 78;
    RightAnswer2 = 120;
    RightAnswer3 = 82;
    
    NumberCorrect = 0;
    AnswerPage = 'cosmic_rays_solution.html';
    
    if (size1 == RightAnswer1) {
        NumberCorrect++;
    }
    if (size2 == RightAnswer2) {
        NumberCorrect++;
    }
    if (size3 == RightAnswer3) {
        NumberCorrect++;
    }
    
    //    alert ("You answered " +NumberCorrect + " out of the first 3 questions correctly!  Compare your answer to ours for the last one.");
    location = AnswerPage; 
}