After submitting course create form in moodle 2.8 showing alert "This page should automatically.." message

I am using **moodle 2.8** I have added some css code in course/edit.php to hide some form fields on for trainer/student role. But when I submit form from trainer account showing alert message like "This page should automatically redirect. If nothing is happening please use the continue link below." and show "**Continue**" link. I guessed, reason may be adding css in php script. but just I want to hide that message so my form should be submitted directly like admin area.