function openRadio() {

  width=333;
  height=243;

  var xMax = screen.width, yMax = screen.height;
  var xOffset = (xMax - width)/2, yOffset = (yMax - height)/2;

  var window_handle = open('/radio/index.php', 'radio', 'fullscreen=0,location=0,menubar=0,resizable=0,scrollbars=0,status=0,toolbar=0,directories=0,width='+width+',height='+height+',top='+yOffset+',left='+xOffset);
  window_handle.focus();

}