// GET AND LOG QUERYSTRING FROM REFERER
if ($_SERVER['HTTP_REFERER']){
	$refer = $_SERVER['HTTP_REFERER'];
	$referrer_url = $refer;
	if (strstr($referrer_url, "google")) {
		$sitefrom = "Google";
		$ptn = '![?&]q=([^&.]*)!';
	} else if (strstr($referrer_url, "yahoo")) {
		$sitefrom = "Yahoo";
		$ptn = '![?&]p=([^&.]*)!';
	} else if (strstr($referrer_url, "msn")) {
		$sitefrom = "MSN";
		$ptn = '![?&]q=([^&.]*)!';
	}
	if (preg_match($ptn, $referrer_url, $matches)) {
		$qstring = urldecode($matches[1]);
		logaction("arrived from " . $sitefrom .", searched for '" . $qstring . "'");
	}
}