Someone

switch ($_GET['site'];) 
case "mainconfig":
	include("pages/mainconfig.php");
	break;
case "useradmin":
	include("pages/useradmin.php");
	break;
case "rules":
	include("pages/rules.php");
	break;
case "about":
	include("pages/about.php");
	break;
case "store":
	include("pages/store.php");
	break;
case "serverreset":
	include("pages/serverreset.php");
	break;
case "download":
	include("pages/download.php");
	break;
case "ipban":
	include("pages/ipban.php");
	break;
}