function add(materialove_cislo,pocet) {
        var url = "/add.php?materialove_cislo="+materialove_cislo+"&pocet="+pocet;
        //alert(url);
        if(window.XMLHttpRequest) {
                req = new XMLHttpRequest();
        } else if(window.ActiveXObject) {
                req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        
        req.open("GET", url, true);
        req.onreadystatechange = callback;
        req.send(null);
        
}

function callback() 
{
        if(req.readyState == 4) {
                if(req.status == 200) {
                        response = req.responseText;
                        document.getElementById("kosik-info").innerHTML = response;
                } else {
                        alert("There was a problem retrieving the data:\n" + req.statusText);
                }
        }
}

function drop(materialove_cislo) {
        var url = "/drop.php?materialove_cislo="+materialove_cislo;
        //alert(url);
        if(window.XMLHttpRequest) {
                req = new XMLHttpRequest();
        } else if(window.ActiveXObject) {
                req = new ActiveXObject("Microsoft.XMLHTTP");
        }
        
        req.open("GET", url, true);
        req.onreadystatechange = callback2;
        req.send(null);
        
}

function callback2() 
{
        if(req.readyState == 4) {
                if(req.status == 200) {
                        response = req.responseText;
                        document.getElementById("kosik-info").innerHTML = response;
                        setTimeout("window.self.location.reload(true)", 1000);

                        
                } else {
                        alert("There was a problem retrieving the data:\n" + req.statusText);
                }
        }
}

function enable()
{
if(document.getElementById('fakt_psc').disabled == false)
{
document.getElementById('fakt_psc').disabled = true;
document.getElementById('fakt_mesto').disabled = true;
document.getElementById('fakt_ulice').disabled = true;
document.getElementById('fakt_firma').disabled = true;
document.getElementById('fakt_ico').disabled = true;
document.getElementById('fakt_dic').disabled = true;
}
else
{
document.getElementById('fakt_psc').disabled = false;
document.getElementById('fakt_mesto').disabled = false;
document.getElementById('fakt_ulice').disabled = false;
document.getElementById('fakt_firma').disabled = false;
document.getElementById('fakt_ico').disabled = false;
document.getElementById('fakt_dic').disabled = false;
}
}

/************************CAPTCHA***************************/

function getXmlHttpRequestObject() {
 if (window.XMLHttpRequest) {
    return new XMLHttpRequest(); //Mozilla, Safari ...
 } else if (window.ActiveXObject) {
    return new ActiveXObject("Microsoft.XMLHTTP"); //IE
 } else {
    //Display our error message
    alert("Nemáte pohlížeč podporující XML request!.");
 }
}

//Our XmlHttpRequest object
var receiveReq = getXmlHttpRequestObject();

//Initiate the AJAX request
function makeRequest(url,param,onReady) {
//If our readystate is either not started or finished, initiate a new request
 if (receiveReq.readyState == 4 || receiveReq.readyState == 0) {
   //Set up the connection to captcha_test.html. True sets the request to asyncronous(default) 
   receiveReq.open("POST", url, true);
   //Set the function that will be called when the XmlHttpRequest objects state changes
   receiveReq.onreadystatechange = eval(onReady); 
   receiveReq.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
   receiveReq.setRequestHeader("Content-length", param.length);
   receiveReq.setRequestHeader("Connection", "close");
   
   //Make the request
   receiveReq.send(param);
    
 }
  
}

//Called every time our XmlHttpRequest objects state changes
function updatePage() {
 //Check if our response is ready
 if (receiveReq.readyState == 4) {
   if(receiveReq.responseText == 1)
   {
   return true;
   }
   else
   {
   alert("Neopsali jste správně text z obrázku!");
   img = document.getElementById('imgCaptcha'); 
   img.src = '/inc/create_image.php?' + Math.random();
   return false;
   }
   
 }
}

function getParam(theForm) {
 var url = '/ajax/captcha.php';
 var postStr = theForm.txtCaptcha.name + "=" + encodeURIComponent( theForm.txtCaptcha.value );
 return makeRequest(url,postStr,"updatePage");
}