ok, when i clicked the button to switch it says boxiecredits.c is a bad format. heres the code i used for it.

function creditsswitch()
{
while (key_any) {wait (1); }
level_load("boxiecredits.c");
}

and also when i have the inlcude"boxiecredits.c" both programs play at once and neither of them work.

Sorry, im new. I have a tendency to ask really simple questions, so please be patient.