function poslat(){
  var ajax = (window.XMLHttpRequest ? new XMLHttpRequest() : (window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : false));
  if(!ajax){
    alert("Tak tady to nepobìží!");
    return true;
  }
  ajax.onreadystatechange= function () { zpracuj(ajax); } ;
  
  var tempvar = $("form#i-filt").serialize();
  
  //alert(tempvar);

  ajax.open("POST", "_vytvor_filtry.php", true);
  ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  ajax.send(tempvar);
  
  return false
}


function zpracuj(ajax){
  var txt;
  if (ajax.readyState == 4){ //bylo odpovìzeno
    if (ajax.status == 200 || ajax.status==0){
      txt=ajax.responseText;
      document.getElementById("results").innerHTML = txt;
    }
      else alert("Chyba: "+ ajax.status +":"+ ajax.statusText);
  }
}



function poslat2(){
  var ajax = (window.XMLHttpRequest ? new XMLHttpRequest() : (window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : false));
  if(!ajax){
    alert("Tak tady to nepobìží!");
    return true;
  }
  ajax.onreadystatechange= function () { zpracuj2(ajax); } ;
  
  var tempvar = $("form#i-filt").serialize();
  
  //alert(tempvar);

  ajax.open("POST", "_vytvor_filtry2.php", true);
  ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  ajax.send(tempvar);
  
  return false
}


function zpracuj2(ajax){
  var txt;
  if (ajax.readyState == 4){ //bylo odpovìzeno
    if (ajax.status == 200 || ajax.status==0){
      txt=ajax.responseText;
      document.getElementById("results2").innerHTML = txt;
    }
      else alert("Chyba: "+ ajax.status +":"+ ajax.statusText);
  }
}