There is an error on my Jcow, the notice as follows:
Warning: eregi() [function.eregi]: REG_EMPTY in /home/u561334073/public_html/modules/mobile/mobile.hook.php on line 19

Warning: Cannot modify header information - headers already sent by (output started at /home/u561334073/public_html/modules/mobile/mobile.hook.php:19) in /home/u561334073/public_html/includes/libs/misc.inc.php on line 184

Where Do I Fix it like ...?
Please Help

Thank you ....