var numQues = 6;

var answers = new Array(6);
answers[0] = "1870";
answers[1] = "The New Zealand Natives";
answers[2] = "1884, to Australia";
answers[3] = "The Originals";
answers[4] = "In 1905, during the Great Britain tour";
answers[5] = "1906, in Paris";

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

  for (i=0; i<numQues; i++) {
    currElt = form.elements[i];
    currSelection = currElt.selectedIndex;
    if (currElt.options[currSelection].value == answers[i]) {
      score++;
    }
  }

  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;

}