var us_menu_items_count = document.getElementsByClassName('us_menu_item').length

for(var i=0; i < us_menu_items_count; i++){
  document.getElementsByClassName('us_menu_item')[i].style.display = "grid";
}

var us_menu_items_count = document.getElementsByClassName('us_menu_item_inline').length

for(var i=0; i < us_menu_items_count; i++){
  document.getElementsByClassName('us_menu_item_inline')[i].style.display = "inline-block";
}