var actualLoad = "img_zah1";
var waitLoad = "img_zah2";
var adresarObr = "21650";
var actualLoadTmp = "";
var obnova = 8000;

function rotateImgLoad(){

  myDiv = document.getElementById(actualLoad);
  if (xmlHttp)
  {
    try
    {

      var params = "&adresarObr=" + adresarObr +
                   "&subakce=randoimg";
      xmlHttp.open('GET', 'http://' + document.location.host + '/redakce/ajax.php?akce=nahodnyobrjrock' + params, true);
      xmlHttp.onreadystatechange = handleRequestStateChange;
      xmlHttp.send(null);


    }
    catch (e)
    {
      alert("Can't connect to server 2:\n" + e.toString());
    }
  }
  actualLoadTmp = actualLoad;
  actualLoad = waitLoad;
  waitLoad = actualLoadTmp;
  

}

function rotateImg(){
  
  document.getElementById(actualLoad).style.display = "none";
  document.getElementById(waitLoad).style.display = "";
  rotateImgLoad();
  setTimeout('rotateImg()', obnova);  
}