var xmlHttp; 
var xmlHttp3;  
var xmlHttp2;  
function kosarChange( konyv_id ){ 
  xmlHttp=GetXmlHttpObject();
  if (xmlHttp==null)
    {
    alert ("Your browser does not support AJAX!");
    return;
    } 
  var url="rendeles/tartalom.php";
  url=url+"?konyv_id="+konyv_id;
  url=url+"&sid="+Math.random();
  url=url+"&action=new";
  xmlHttp.onreadystatechange=stateChangedKosar;
  xmlHttp.open("GET",url,true);
  xmlHttp.send(null);
    
  KosarDBChange("new",konyv_id);
  
  setTimeout("Kosarba()",300);
}

function Kosarba(){
    
    if(document.getElementById('belekerult').value == "nem"){
        document.getElementById('kosarba_text').innerHTML = "Sajnáljuk, a termék elfogyott!";
    }else{
        document.getElementById('kosarba_text').innerHTML = "A termék a kosárba került!";
    }
    openDivById('kosarba'); 
}

function stateChangedKosar() 
{ 
    
    if (xmlHttp.readyState==4){ 
        document.getElementById("popup_kosar").innerHTML=xmlHttp.responseText;
    }
}


function kosarDeleteKonyvByRendeles( konyv_id ){ 
  xmlHttp=GetXmlHttpObject();
  if (xmlHttp==null)
    {
    alert ("Your browser does not support AJAX!");
    return;
    } 
  
  url="rendeles/tartalom.php";
  url=url+"?konyv_id="+konyv_id;
  url=url+"&sid="+Math.random();
  url=url+"&action=delete";
  xmlHttp.onreadystatechange=stateChangedKosar;
  xmlHttp.open("GET",url,true);
  xmlHttp.send(null);
  
  KosarDBChange("delete",konyv_id);

}


function KosarDBChange(action,konyv_id){
    xmlHttp3=GetXmlHttpObject();
  if (xmlHttp3==null)
    {
    alert ("Your browser does not support AJAX!");
    return;
    } 
  var url="rendeles/kosar.php";
  url=url+"?konyv_id="+konyv_id;
  url=url+"&action="+action;
  url=url+"&sid="+Math.random();
  xmlHttp3.onreadystatechange=stateChangedKosarDB;
  xmlHttp3.open("GET",url,true);
  xmlHttp3.send(null);
}

function stateChangedKosarDB() 
{ 
    if (xmlHttp3.readyState==4){ 
        document.getElementById('kosar').innerHTML=xmlHttp3.responseText;
    }
}