im using this code and im gettign this error:

Parse error: parse error in C:\Documents and Settings\Mike\Desktop\xampplite\htdocs\chat\chatharbour\lib\roomuserupdate.php on line 14

Code:
<?php
$username = $_GET['userName'];
$roomid = $_GET['roomID'];
$catid = $_GET['catID'];

$request = "INSERT INTO `onlineusers` ( `UserName` , `RoomID` , `CatID`) 

VALUES ( 

'$username', '$roomid', '$catid');";

// execute the query 
$result = mysql_query($request) or die(mysql_error()); 
?>