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

var riddle = new Riddle('A Fox, A Sheep, and A Sack of Hay', '\n<p>\n  A farmer is travelling with a fox, a sheep and a small sack of hay.  He comes to a river with a small boat in it.  The boat can only support\n  the farmer and one other animal/item.  If the farmer leaves the fox alone with the sheep, the fox will eat the sheep.\n  And if the farmer leaves the sheep alone with the hay, the sheep will eat the hay.\n</p>\n<p>\n  How can the farmer get all three as well as himself safely across the river?\n</p>\n', 'a-fox-a-sheep-and-a-sack-of-hay', '');

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);