<?php $xajax->printJavascript(); ?>

<?php
require ('xajax.inc.php');

function doTimestamp()  {
  $objResponse = new xajaxResponse();
  $doc = new DOMDocument;
  $doc2 = "http://www.timezero.ru/cgi-bin/info.pl?Dastin";
  $fd = file_get_contents($doc2);
  if (preg_match ("/user/i", $fd)) {
     $doc->loadXML("<ROOT>".$fd."</ROOT>"); //http://www.timezero.ru/info.pl?Dastin
     $USER = $doc->getElementsByTagName('USER');
     $USER_online = $USER->item(0)->getAttribute('online');
     }
  if($USER_online==1) $sOut = "Îíëàéí";
  else $sOut = "Îôô";
  $objResponse->addAssign("timebox", "innerHTML", $sOut);
  return $objResponse->getXML();
}

$objAjax = new xajax();
$objAjax->registerFunction('doTimestamp');
$objAjax->processRequests();
$objAjax->printJavascript();
?>

<div id="timebox">&nbsp;</div>
<input type="button" class="button" value="Ïðîâåðèòü" onclick="xajax_doTimestamp();" />

Error: the XML response that was returned from the server cannot be processed.