function getVideoId(param,debug) {
  var param="v";
  if (debug) {
    alert(param + ": " + getParameter(param));
  }
  return getParameter(param);
}

function getParameter(param) {
  param = param.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]" + param + "=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec(window.location.href);
  if (results == null) {
     return "";
  } else {
     return results[1];
  }
}