/* domucgiare - 2 banner doc 2 ben (.tvsd) v2 (11/10/2026): nam duoi menu ngang, dung lai truoc chan trang (footer), khong de len noi dung */
(function(){
  var raf=0;
  function place(){
    raf=0;
    var sd=document.querySelectorAll(".tvsd");if(!sd.length)return;
    var nav=document.querySelector("nav.navbar")||document.getElementById("nav-menu");
    var top=12;
    if(nav){var r=nav.getBoundingClientRect();if(r.bottom > 0)top=Math.round(r.bottom)+14;}
    var h=0;for(var i=0;i!==sd.length;i++){h=Math.max(h,sd[i].offsetHeight||480);}
    var ft=document.getElementById("footer")||document.querySelector("footer");
    if(ft){var limit=Math.round(ft.getBoundingClientRect().top)-14;if(top+h > limit)top=limit-h;}
    var hide=(top+h) < 80||(window.innerHeight-Math.max(top,0)) < 200;
    for(var j=0;j!==sd.length;j++){
      var el=sd[j];el.style.setProperty("top",top+"px","important");
      el.style.setProperty("opacity",hide?"0":"1","important");
      el.style.setProperty("pointer-events",hide?"none":"auto","important");
    }
  }
  function q(){if(!raf)raf=requestAnimationFrame(place);}
  window.addEventListener("scroll",q,{passive:true});window.addEventListener("resize",q);
  window.addEventListener("load",q);setTimeout(q,300);setTimeout(q,1500);q();
})();