function hideLabel (label_id) {
  var labels = document.getElementById(label_id);
  labels.style.visibility = "hidden";
}

function showLabel (label_id, input_tag) {
  if (input_tag.value == '') {
	  var labels = document.getElementById(label_id);
	  labels.style.visibility = "visible";
  }
}
function launchPlayer(url) {
window.open(url, 'carbndrum', 'width=831,height=214,scrollbars=no,menubars=no,status=no,location=no,toolbar=no');
}