function uvod_obrazky(){
setTimeout("uvod_obrazky();AjaxGET( 'pages/fotky-uvod.php' , 'fotky_uvod' , '&ajax=true');", 8000);
}

function AjaxGET( subor , element , url1){


xmlhttp1=GetXmlHttpObject();
if (xmlhttp1==null){
  alert ("Browser does not support HTTP Request");
  return;
  }


var url="/" + subor + "?sid="+Math.random() + url1;
xmlhttp1.onreadystatechange=function(){
  if (xmlhttp1.readyState==4 && xmlhttp1.status == 200){
    document.getElementById( element ).innerHTML=xmlhttp1.responseText;
  }
}
xmlhttp1.open("GET",url,true);
xmlhttp1.send(null);
}

function GetXmlHttpObject(){
if (window.XMLHttpRequest){
  return new XMLHttpRequest();
  }
if (window.ActiveXObject){
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}