/* This script and many more are available free online at
The JavaScript Source :: http://javascript.internet.com
Created by: James Crooke :: http://www.cj-design.com */

var useranswers = new Array();
var answered = 0;

function renderQuiz() {
  for(i=0;i<questions.length;i++) {
    document.writeln('<p class="question">' + questions[i] + ' <span id="result_' + i + '"><br /><img src="blank.gif" style="border:0" alt="" /></span></p>');
    for(j=0;j<choices[i].length;j++) {
      document.writeln('<input type="radio" name="answer_' + i + '" value="' + choices[i][j] + '" id="answer_' + i + '_' + j + '" class="question_' + i + '" onclick="submitAnswer(' + i + ', this, \'question_' + i + '\', \'label_' + i + '_' + j + '\')" /><label id="label_' + i + '_' + j + '" for="answer_' + i + '_' + j + '"> ' + choices[i][j] + '</label><br />');
    }
  }
  document.writeln('<div id="hyouji"><p><input type="submit" value="結果を表示" onclick="showScore()"  title="あなたの運命は？。　└|∵|┐"/> <input type="submit" value="リセットします。" onclick="resetQuiz(true)"  title="もう一回！、やる…*。"/></p><p style="display:none"><img src="correct.gif" style="border:0" alt="Correct!" /><img src="incorrect.gif" style="border:0" alt="Incorrect!" /></p></div>');
}
function resetQuiz(showConfirm) {
  if(showConfirm)
    if(!confirm("回答を消去し、再開の準備をします。　いいですか？。"))
      return false;
  document.location = document.location;
}
function submitAnswer(questionId, obj, classId, labelId) {
  useranswers[questionId] = obj.value;
  document.getElementById(labelId).style.fontWeight = "bold";
  disableQuestion(classId);
  showResult(questionId);
  answered++;
}
function showResult(questionId) {
  if(answers[questionId] == useranswers[questionId]) {
    document.getElementById('result_' + questionId).innerHTML = '<br /><img src="correct.gif" style="border:0" alt="Correct!" />';
  } else {
    document.getElementById('result_' + questionId).innerHTML = '<br /><img src="incorrect.gif" style="border:0" alt="Incorrect!" />';
  }
}
function showScore() {
  if(answered != answers.length) {
    alert("未回答があります。");
    return false;
  }
  questionCount = answers.length;
  correct = 0;
  incorrect = 0;
  for(i=0;i<questionCount;i++) {
    if(useranswers[i] == answers[i])
      correct++;
    else
      incorrect++;
  }
  pc = Math.round((correct / questionCount) * 100);
  alertMsg =  questionCount+" 問中、" + "正解数は、" + correct + "\n\n";
  alertMsg += "正解率は、" + pc + "% です。 \n\n";
  if(pc == 100)
    alertMsg += response[0];
  else if(pc >= 90)
    alertMsg += response[1];
  else if(pc >= 70)
    alertMsg += response[2];
  else if(pc > 50)
    alertMsg += response[3];
  else if(pc >= 40)
    alertMsg += response[4];
  else if(pc >= 20)
    alertMsg += response[5];
  else if(pc >= 10)
    alertMsg += response[6];
  else
    alertMsg += response[7];
  if(pc < 100) {
    if(confirm(alertMsg))
      resetQuiz(false);
    else
      return false;
  } else {
    alert(alertMsg);
  }
}
function disableQuestion(classId) {
  var alltags=document.all? document.all : document.getElementsByTagName("*")
  for (i=0; i<alltags.length; i++) {
    if (alltags[i].className == classId) {
      alltags[i].disabled = true;
    }
  }
}