function Riddle(title, body, tag, imageUrl){
  this.title = title;
  this.body = body;
  this.tag = tag;
  this.imageUrl = imageUrl;
}

var riddle = new Riddle('A Liar and a Truth Teller', '\n<p>\n  You are walking down a path when you come to two doors.  Opening one of the doors will lead you to a life of prosperity and happiness, while\n  opening the other door will lead to a life of misery and sorrow.  You don\'t know which door leads to which life.\n</p>\n<p>\n  In front of the doors are two twin brothers who know which door leads where.  One of the brothers always lies, and the \n  other always tells the truth.  You don\'t know which brother is the liar and which is the truth-teller.\n</p>\n<p>\n  You are allowed to ask one single question to one of the brothers (not both) to figure out which door to open.\n</p>\n<p>\n  What question should you ask?\n</p>\n', 'a-liar-and-a-truth-teller', '');

function showRiddle(curRiddle){
  var elem = document.getElementById('riddle_body');
  elem.innerHTML = curRiddle.body;
  var elem = document.getElementById('riddle_title');
  elem.innerHTML = curRiddle.title;
  var elem = document.getElementById('riddle_image');
  if ((curRiddle.imageUrl == null) || (curRiddle.imageUrl == '')){
    elem.innerHTML = '';
  }else{
    elem.innerHTML = '<img style="width:50px;" src="http://www.bigriddles.com/images/riddles/' + curRiddle.imageUrl + '"/>';  
  }
  
  var elem = document.getElementById('riddle_solution');
  elem.innerHTML = '<a href="http://www.bigriddles.com/riddle/' + curRiddle.tag + '">Click here to see the solution.</a>';
}

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showRiddle(riddle);