document.getElementById('lang_div').style.background='none';

if(document.getElementById('promo_img_en')) document.getElementById('promo_img_en').style.background='none';
if(document.getElementById('promo_img_ru')) document.getElementById('promo_img_ru').style.background='none';
if(document.getElementById('promo_img_ua')) document.getElementById('promo_img_ua').style.background='none';