add the following code at line 1 of the apge:
<?php
function cleanQS() {
$varQS = "";
if(isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] != "") {
$arrRemove = array();
$arrRemove[] = "fail";
$arrQS = explode("&", $_SERVER["QUERY_STRING"]);
foreach($arrQS as $k => $v) {
$arrVar = explode("=", $v);
if(in_array($arrVar[0], $arrRemove)) unset($arrQS[$k]);
}
if(sizeof($arrQS) > 0) {
$varQS = "".implode("&", $arrQS);
}
}
return $varQS;
}
if(isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] != "") $_SERVER["QUERY_STRING"] = cleanQS($_SERVER["QUERY_STRING"]);
?>