function event($request, $keyword)
{
switch ($request) {
case 'all':
$result = event::search($keyword);
break;
case '':
$result = event::search($keyword);
break;
case 'academic':
$result = event::search_academic($keyword);
break;
case 'study':
$result = event::search_study($keyword);
break;
case 'papers':
break;
break;
}
return $result;
}
