var numQues = 20;
var numChoi = 4;

var answers = new Array(4);
answers[0] = "Wait in line for an Orange Julius";
answers[1] = "Black - Babes";
answers[2] = "Leaving on a Jet Plane";
answers[3] = "Tamarack Lodge in Big Bear 1944";
answers[4] = "Smores";
answers[5] = "The Rock";
answers[6] = "Stellars Jay";
answers[7] = "Primo Carnera";
answers[8] = "Merle Andrews";
answers[9] = "DJ Wiley";
answers[10] = "Sunsweet";
answers[11] = "Bunker";
answers[12] = "maintenance shop";
answers[13] = "The Caissons Go Rolling Along";
answers[14] = "Bracken fern";
answers[15] = "All of the above";
answers[16] = "Gary Best";
answers[17] = "Mike Riley";
answers[18] = "Black Bear";
answers[19] = "Rottweiler";

function getScore(form) {
  var score = 0;
  var currElt;
  var currSelection;

  for (i=0; i<numQues; i++) {
    currElt = i*numChoi;
    for (j=0; j<numChoi; j++) {
      currSelection = form.elements[currElt + j];
      if (currSelection.checked) {
        if (currSelection.value == answers[i]) {
          score++;
          break;
        }
      }
    }
  }

  score = Math.round(score/numQues*100);
  form.percentage.value = score + "%";

  var correctAnswers = "";
  for (i=1; i<=numQues; i++) {
    correctAnswers += i + ". " + answers[i-1] + "\r\n";
  }
  form.solutions.value = correctAnswers;

}