Keyboard shortcut ctrl+r not working for me

Keyboard shortcut ctrl+r not working for me

In the snippet below, ctrl+enter (event.which == 13) is working. However,
ctrl+r (event.which == 9) is not.
if ($('.selector')) {
$(document).keypress(function(event) {
if ( event.altKey && event.which == 13 ) {
$('.link a').trigger('click');
} else if ( event.altKey && event.which == 9 ) {
$('.link a').trigger('click');
} else {
return false;
}
});
}