- if ($a->is_mobile || $a->is_tablet) {
- $a->page['htmlhead'] .= '<meta name=viewport content="width=device-width, initial-scale=1">'."\n";
- $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="view/theme/vier/mobile.css" media="screen"/>'."\n";
+ if (DI::mode()->isMobile() || DI::mode()->isMobile()) {
+ DI::page()['htmlhead'] .= '<meta name=viewport content="width=device-width, initial-scale=1">'."\n";
+ DI::page()['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="view/theme/vier/mobile.css" media="screen"/>'."\n";