function checkform() {
	document.getElementById('submitb').value = "Bezig met reserveren...";
	document.getElementById('submitb').disabled = true;
	if (document.getElementById('naam').value.length > 0) { 
		return true;
	 }
	else { 
	  alert('U heeft geen naam ingevuld. Zonder naam kunt u niet reserveren.');
  	  document.getElementById('submitb').disabled = false;
	  document.getElementById('submitb').value = "RESERVEER NU";
    return false;
	 } 
} 

function gettimes(fid) { 
  document.getElementById('aantal').disabled = true;
  AjaxRequest.post ( {
    'url':'inc/gettimes.inc.php?id='+fid,
    'onLoading':function() { document.getElementById('time').innerHTML = 'Bezig met ophalen tijden...'; },
    'onSuccess':function(req) { document.getElementById('time').innerHTML=req.responseText; }
   } ); 
 }
 
 
function gettickets(aid) { 
  AjaxRequest.post ( {
    'url':'inc/gettickets.inc.php?aid='+aid,
    'onSuccess':function(req) { 
			   document.getElementById('aantal').innerHTML=req.responseText;
			   document.getElementById('aantal').disabled = false;
			}
   } ); 
 }
 
  function EnterPressed(e) {
    var characterCode
    if (e && e.which){           // NN4 specific code
      e = e
      characterCode = e.which
     }
    else {
      e = event
      characterCode = e.keyCode // IE specific code
     }
    if (characterCode == 13)
	  return true;// Enter key is 13
    else
	  return false
   }