// JavaScript Document
  function ZobrazVelkeFoto(IDFir,IDObr,Poradi)
  {
   var xHttp = false;
  
   if (window.XMLHttpRequest) {
     xHttp = new XMLHttpRequest();
   } else if (window.ActiveXObject) {
     xHttp = new ActiveXObject("Microsoft.XMLHTTP");
   }
   var url="http://www.4stav.cz/katalog/include/funkce/DejVelkeFoto.php?id="+IDFir+"-"+IDObr+"-"+Poradi+"-"+new Date().getTime();
   xHttp.onreadystatechange = function (){
      ZmenaStavuVelkeFoto(xHttp); 
   }
     
   xHttp.open("GET",url,true);
   xHttp.send(null);
   document.getElementById("DivFoto").style.visibility="visible"; 
  }


  function SkryjVelkeFoto()
  {
    //document.getElementById('DivLupa').style.visibility = "visible";
    document.getElementById('DivFoto').innerHTML='';
    document.getElementById('DivFoto').style.visibility='hidden';
  }  

  
  function ZmenaStavuVelkeFoto(aHttp) {
    var xxx = '';
      if(aHttp.readyState==4) {
        if(aHttp.status==200)
          {document.getElementById("DivFoto").innerHTML=aHttp.responseText;}
      } else 
         { //document.getElementById("DivLupa").style.visibility = "hidden";
           //document.getElementById("DivFoto").innerHTML=' načítám ';
           }
  }