function calculateSize(targetId, tries) {
  if (tries == undefined) {
    tries = 0;
  }
  setTimeout(function(){
    if (($('#' + targetId).children(":first").height() == 0 || $('#' + targetId).children(":first").width() == 0) && tries < 4) {
      calculateSize(targetId, tries + 1);
    } else {
      $('#' + targetId).height($('#' + targetId).children(":first").height());
      $('#' + targetId).width($('#' + targetId).children(":first").width());
    }
  }, 500);
  $('#' + targetId).css({backgroundColor: 'transparent'});
}