function getObject(name) { 
   var ns4 = (document.layers) ? true : false; 
   var w3c = (document.getElementById) ? true : false; 
   var ie4 = (document.all) ? true : false; 

   if (ns4) return eval('document.' + name); 
   if (w3c) return document.getElementById(name); 
   if (ie4) return eval('document.all.' + name); 
   return false; 
}

function loadXMLDoc(key,file,loc,tmp) {
var req; 
var url=file+"?"+key;
if (tmp) {getObject(loc).innerHTML = '&nbsp;<img style="vertical-align:middle" src="images/loading.gif">Czekaj...';}
try { req = new ActiveXObject("Msxml2.XMLHTTP"); } 
catch(e) { 
try { req = new ActiveXObject("Microsoft.XMLHTTP"); } 
catch(oc) { req = null; } 
} 
if (!req && typeof XMLHttpRequest != "undefined") { req = new XMLHttpRequest(); } 
  if (req != null) {
    req.onreadystatechange=function(){if(req.readyState!=4)return;if(req.status==200){getObject(loc).innerHTML = req.responseText}};
    req.open("GET", url, true); 
    req.send(null); 
  } 
} 

function loadXMLDoc2(key,file,loc,tmp) {
var req; 
var url=file+"?"+key;
if (tmp) {getObject(loc).innerHTML = '&nbsp;<img style="vertical-align:middle" src="images/loading.gif">Czekaj...';}
try { req = new ActiveXObject("Msxml2.XMLHTTP"); } 
catch(e) { 
try { req = new ActiveXObject("Microsoft.XMLHTTP"); } 
catch(oc) { req = null; } 
} 
if (!req && typeof XMLHttpRequest != "undefined") { req = new XMLHttpRequest(); } 
  if (req != null) {
    req.onreadystatechange=function(){if(req.readyState!=4)return;if(req.status==200) {
       getObject(loc).innerHTML = '<span>'+req.responseText+'</span>';
    }};
    req.open("GET", url, true); 
    req.send(null); 
  } 
} 

function ustaw_checkboxy_ajax(i, isset_mid) {

       document.getElementById('instock').value = i;
       
       document.products.submit();
       
       return false;

}

function zmien_instock_ajax(wartosc) {
       var kierunek;
       if (wartosc == 1) {
              if (document.getElementById('instock').value == 1 || document.getElementById('instock').value == 3 || document.getElementById('instock').value == 5 || document.getElementById('instock').value ==7 ) {
                     kierunek = 0;
              }
              else {
                     kierunek = 1;
              }
       }
       if (wartosc == 2) {
              if (document.getElementById('instock').value == 2 || document.getElementById('instock').value == 3 || document.getElementById('instock').value == 6 || document.getElementById('instock').value == 7) {
                     kierunek = 0;
              }
              else {
                     kierunek = 1;
              }
       }
       if (wartosc == 4) {
              if (document.getElementById('instock').value == 4 || document.getElementById('instock').value == 5 || document.getElementById('instock').value == 6 || document.getElementById('instock').value == 7) {
                     kierunek = 0;
              }
              else {
                     kierunek = 1;
              }
       }
       if (kierunek == 0) {
              document.getElementById('instock').value = Number(document.getElementById('instock').value) - Number(wartosc);
       }
       if (kierunek == 1) {
              document.getElementById('instock').value = Number(document.getElementById('instock').value) + Number(wartosc);
       }
       
       if (document.getElementById('instock').value == 0) {

              document.getElementById('instock').value = 7;

       }
       
       document.products.submit();
       
       return false;
}