var http_request = false;

    function prepareTitleEdit(id) {
        hidden_id = document.getElementById('title_id');
        hidden_id.value = id;
        
        txt = document.getElementById('title_a'+id);
        val = document.getElementById('add_new_title');
        val.value = txt.innerHTML;
    }
    
    function addToCart(id) {
        makeRequest('cart.php','id='+id+'&action=add&');
    }
    
    function delFromCart(id) {
        makeRequest('cart.php','id='+id+'&action=del&');
    }
    
    function makeRequest(url, strSubmit) {

        http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
            }
        } else if (window.ActiveXObject) { // IE
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }

        if (!http_request) {
            alert('Poddaję się :( Nie mogę stworzyć instancji obiektu XMLHTTP');
            return false;
        }
        http_request.onreadystatechange = function() { parseContents(http_request); };
        http_request.open('POST', url, true);
        http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        http_request.send(strSubmit);
        

    }

    function parseContents(http_request) {

        if (http_request.readyState == 4) {
            if (http_request.status == 200) {
                txt = http_request.responseText;
                if(txt=='empty'){
                    var cart = document.getElementById('cart');
                    cart.innerHTML = '';
                    var count_cart = document.getElementById('count_cart');
                    count_cart.innerHTML = 0;
                } else if(txt!=''){
                    
                    array = txt.split("\n");
                    var cart = document.getElementById('cart');
                    cart.innerHTML = '';
                    
                    for(i=0;i<array.length;i++){
                        array2 = array[i].split("|");

                        cart.innerHTML += '';

           if ('delFromCart') {
                       
               location.href="schowek.php";
            }
                    }
                    var count_cart = document.getElementById('count_cart');
                    count_cart.innerHTML = array.length;
                }
            } else {
                alert('Wystąpił problem z zapytaniem.');
            }
        }

    }