function enableCaptcha () {
  
  if ($("dcaptcha") != null && $("dcaptcha").style.display=="none") {
    $("icaptcha").src="captcha/small.php";
    $("dcaptcha").style.display="block";
  }
}

function changeCaptcha () {

  t = new Date().getTime();
  $("icaptcha").src="captcha/small.php?"+t;

}

function CheckFieldLength(fn,wn,rn,mc) {
  var len = fn.value.length;
  if (len > mc) {
    fn.value = fn.value.substring(0,mc);
    len = mc;
  }
//  document.getElementById(wn).innerHTML = len;
  if (len > 0) {
    enableCaptcha();
  }
  $(rn).innerHTML = mc - len;
}



function addCommentToMovie (f, mid) {

//  alert (f);
  //Form.disable (f);
  $("btnPostMovieComment").value = "Adding comment ...";
  new Ajax.Request (
    f.action,
    { asynchronous:true,
      parameters: Form.serialize(f),
      onSuccess: function(transport) {
      if (transport.responseText.match(/^ERROR/)) {
//      	Form.enable (f);
        alert (transport.responseText);
      } else {
        try {
       	  Form.disable (f);
       	  eval (transport.responseText);
          $("btnPostMovieComment").value = 'Comment Posted';
        } catch (e) {
        	alert (e);
        }
      // alert (transport.responseText);
      }     
      }
    }
  );
  return false;
}