The following are the full error messages:
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/demo/public_html/dev2/contact.php:1) in /home/demo/public_html/dev2/webassist/email/mail_php.php on line 274
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/demo/public_html/dev2/contact.php:1) in /home/demo/public_html/dev2/webassist/email/mail_php.php on line 274
Warning: Cannot modify header information - headers already sent by (output started at /home/demo/public_html/dev2/contact.php:1) in /home/demo/public_html/dev2/contact.php on line 148
The error message after I added the destroy session code after the </HTML> tag.
Warning: Cannot modify header information - headers already sent by (output started at /home/demo/public_html/dev2/contact.php:1) in /home/demo/public_html/dev2/webassist/form_validations/wavt_scripts_php.php on line 84