Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /htdocs/public/www/common.php:51) in /htdocs/public/www/funzioni/funzioni_xajax.php on line 2

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /htdocs/public/www/common.php:51) in /htdocs/public/www/funzioni/funzioni_xajax.php on line 2
Output has already been sent to the browser at /htdocs/public/www/common.php:51. Please make sure the command $xajax->processRequest() is placed before this.