my website was working fine untill i got this error!

Notice: Undefined variable: cfm in /public_html/includes/libs/common.inc.php on line 240

Notice: Undefined index: id in public_html/modules/chatbar/chatbar.hook.php on line 10

Notice: Undefined variable: header in public_html/includes/libs/ss.inc.php on line 388

Notice: Undefined index: defined_theme in public_html/includes/libs/ss.inc.php on line 415

Notice: Undefined index: id in public_html/includes/libs/ss.inc.php on line 435

try to at this line in boot.inc.php

[code]
ini_set('error_reporting',!E_NOTICE );
[/code]