function initHDA() {
  HDAPlayer.flashRoot = "http://www.progiweb.net/design/progiweb/flash/";
  HDAPlayer.initFlashProxy("hda-playerHda");
  //expandFrame();
  showButtons();
  HDAPlayer.sendMeta();
}

// visualizza il frame del player
function expandFrame() {
  var playerFrameName = 'playerFrame';
  var player_width = 205;

  var frameset = top.document.getElementById(playerFrameName).parentNode;
  if (frameset) {
    frameset.cols = "*," + player_width;
  }
}

// visualizza i bottoni di interazione col player
function showButtons() {
  var buttons = document.getElementsByClassName('hda-button-hidden');
  for (var i = 0; i < buttons.length; i++) {
    buttons[i].className = 'hda-button';
  }
}

// This object is for compatibility with HDA 2.0
var HDA = HDAPlayer;

// Utility function to get all elements with the specified class
document.getElementsByClassName = function(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = new Array();

  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    var classNames = child.className.split(' ');
    for (var j = 0; j < classNames.length; j++) {
      if (classNames[j] == className) {
        elements.push(child);
        break;
      }
    }
  }

  return elements;
}