function processRequest(blok) {
 if (httpRequest.readyState == 4) {
  if (httpRequest.status == 200) {
    document.getElementById(blok).innerHTML = httpRequest.responseText;
  } else {
    alert("Chyba pri nacitani stanky "+ httpRequest.status +":"+ httpRequest.statusText);
  }
 }
}

function dokosiku(klic_zbozi) {
  blok='js_okno';
  var url = 'ajax.php?ajax_akce=dokosiku&klic_zbozi='+klic_zbozi; // alert(url);
  if (url != 0) {
   if (window.ActiveXObject){httpRequest=new ActiveXObject("Microsoft.XMLHTTP");}else{httpRequest=new XMLHttpRequest();}
   httpRequest.open("GET", url, true);
   httpRequest.onreadystatechange= function () {processRequest(blok); };
   httpRequest.send(null);
  } else {
   document.getElementById(blok).innerHTML = "";
  }
}

function postou(ano,kosik) {

  blok="tab_cen";
  var url = 'ajax.php?ajax_akce=tabulka_kosik&kosik='+kosik+'&postovne='+ano; // alert(url);
  if (url != 0) {
   if (window.ActiveXObject) { httpRequest=new ActiveXObject("Microsoft.XMLHTTP");
   } else { httpRequest=new XMLHttpRequest(); }
   httpRequest.open("GET", url, true);
   httpRequest.onreadystatechange= function () {processRequest(blok); };
   httpRequest.send(null);
  } else {
   document.getElementById(blok).innerHTML = "";
  }
  
  // přepnutí formuláře
  if (ano==1) {
    document.getElementById('i2').style.display='block';
    document.getElementById('i3').style.display='block';
    document.getElementById('i4').style.display='block';
    document.getElementById('i6').style.display='block';
    document.getElementById('l2').style.display='block';
    document.getElementById('l3').style.display='block';
    document.getElementById('l4').style.display='block';
    document.getElementById('l6').style.display='block';
  }
  if (ano==0) {
    document.getElementById('i2').style.display='none';
    document.getElementById('i3').style.display='none';
    document.getElementById('i4').style.display='none';
    document.getElementById('i6').style.display='none';
    document.getElementById('l2').style.display='none';
    document.getElementById('l3').style.display='none';
    document.getElementById('l4').style.display='none';
    document.getElementById('l6').style.display='none';
  }

}

function kontrola1(postou) {
  var ok=true;

  if (gid('i1').value=='') {
    gid('i1').style.backgroundColor='#ff5555';
    ok=false;
  };
  if (gid('i5').value=='') {
    gid('i5').style.backgroundColor='#ff5555';
    ok=false;
  };

  if (postou==1) {
    if (gid('i2').value=='') {
      gid('i2').style.backgroundColor='#ff5555';
      ok=false;
    };
    if (gid('i3').value=='') {
      gid('i3').style.backgroundColor='#ff5555';
      ok=false;
    };
    if (gid('i4').value=='') {
      gid('i4').style.backgroundColor='#ff5555';
      ok=false;
    };
  }

  return ok;
}

function kontrola2() {
  var ok=true;

  if (gid('i1b').value=='') {
    gid('i1b').style.backgroundColor='#ff5555';
    ok=false;
  };
  if (gid('i2b').value=='') {
    gid('i2b').style.backgroundColor='#ff5555';
    ok=false;
  };

  return ok;
}