function get_rozmiar_sceny(){
  d=document;
  if (typeof window.innerWidth!='undefined') {
    winWidth = window.innerWidth;
    winHeight = window.innerHeight;
  } else {
    if (d.documentElement && typeof d.documentElement.clientWidth!='undefined' && d.documentElement.clientWidth!=0) {
      winWidth = d.documentElement.clientWidth;
      winHeight = d.documentElement.clientHeight;
    } else {
      if (d.body && typeof d.body.clientWidth!='undefined') {
        winWidth = d.body.clientWidth;
        winHeight = d.body.clientHeight;
      }
    }
  }
  var wyn={};
  wyn.width = winWidth;
  wyn.height = winHeight;
  return wyn;
}
function rozmiar_sceny(){
  var wyn=get_rozmiar_sceny();
  alert(wyn.width+' | '+wyn.height);
}