In your code:
Code:
<?php chdir('/home/xxxx/public_html/forum'); ?>
<link href="http://www.lahabraevents.com/forum/clientscript/vbulletin_css/style-b391d83b-00002.css" rel="stylesheet" type="text/css">
<?php include ("http://www.lahabraevents.com/forum/calendar.php"); ?>
Your second line is
output. global.php (which is included in calendar.php), will most likely set cookies. That can't happen because you've already sent output to the browser.