function catalogue_open_big_variation_image_select(img, imgwidth, imgheight)
{
    var pnode = img.parentNode;
    var divs = pnode.getElementsByTagName("div");
    var selector = divs[0];
    var className = "class";

    var cl = selector.getAttribute(className);
    if (!cl) {
        className = "className";
        cl = selector.getAttribute(className);
    }
    catalogue_close_all_selectors(className,img);

    if (cl == "img_big_select_false") {
        selector.setAttribute(className, "img_big_select_true");
        selector.style.left = pageWidth()/2-imgwidth/2-40;
        selector.style.top = pageHeight()/2-imgheight/2-40;
    }
}


function catalogue_close_all_selectors(cn, selectornode)
{
    selector = selectornode.parentNode.parentNode;
    divs = selector.getElementsByTagName("div");
    if (divs.length) {
        for (var i = 0; i<divs.length; i++) {
            if (selectornode.parentNode != divs[i].parentNode) {
                if (divs[i].getAttribute(cn) == "img_big_select_true") {
                    divs[i].setAttribute(cn, "img_big_select_false");
                }
            }
        }
    }
}


function catalogue_select_selector(selector)
{
    var selectrow = selector.parentNode.parentNode.parentNode;
    var inputs = selectrow.getElementsByTagName("input");

    var check = inputs[0];

    check.checked = "checked";

    catalogue_close_selector(selector);
}


function catalogue_close_selector(selector)
{
    var className = "class";
    selector = selector.parentNode;
    var cl = selector.getAttribute(className);
    if (!cl) {
        className = "className";
        cl = selector.getAttribute(className);
    }

    if (cl == "img_select_big_butt") {
        selector = selector.parentNode;
        cl = selector.getAttribute(className);
    }

    if (cl == "img_big_select_true") {
        selector.setAttribute(className, "img_big_select_false");
    }

}

function catalogue_proceed_mask(elm, pid)
{
    catalogue_ajax_prepareCall(elm, pid);
}

var slcts;
function catalogue_reset_selects(elm)
{
    var id = elm.getAttribute("id");
    var setdef = false;
    var options; var i; var j;
    for (i=0;i<slcts.length;i++) {
        if (setdef) {
            options = slcts[i].getElementsByTagName("option");
            for (j=0;j<options.length;j++) {
                if (j == 0) {
                    options[j].setAttribute("selected", "selected");
                } else {
                    options[j].selected = false;
                }
            }
        }
        if (slcts[i].getAttribute("id") == id) {
            setdef = true;
        }
    }
}
function catalogue_ajax_prepareCall(elm, pid)
{
    ajaxCreateHttp();
    var url = "handle.php?cmd=catalogueAjaxVariation&id="+pid;
    var params = "";
    var ctlgparam = elm.parentNode.parentNode;
    slcts = ctlgparam.getElementsByTagName("select");
    for (var i=0;i<slcts.length;i++) {
        if (i>0) params += "&";
        params += slcts[i].name + "=" + slcts[i].value;
    }
    params += "&selectid="+elm.getAttribute("id");
    ajaxRequest(url, catalogueHandleRequestStateChange, params);
}


function catalogue_ajax_proceed()
{
    var xmlDoc=ax.responseXML.documentElement;

    //nastaveni id pro submit
    //var varid = xmlDoc.getElementsByTagName("varid")[0].childNodes[0].nodeValue;
    //document.getElementById("_catalogue_ajax_variation_id_").value = varid.trim();

    //galerie
    var orig = xmlDoc.getElementsByTagName("galleryimg")[0].getElementsByTagName("orig")[0].childNodes[0].nodeValue;
    var thumb = xmlDoc.getElementsByTagName("galleryimg")[0].getElementsByTagName("thumb")[0].childNodes[0].nodeValue;
    var href = xmlDoc.getElementsByTagName("galleryimg")[0].getElementsByTagName("href")[0].childNodes[0].nodeValue;
    var width = xmlDoc.getElementsByTagName("galleryimg")[0].getElementsByTagName("width")[0].childNodes[0].nodeValue;
    var height = xmlDoc.getElementsByTagName("galleryimg")[0].getElementsByTagName("height")[0].childNodes[0].nodeValue;

    var gdiv = document.getElementById("product_detail_gallery");
    var img = gdiv.getElementsByTagName("img")[0];
    img.src = thumb;
    img.width = width;
    img.height = height;

    var a = gdiv.getElementsByTagName("a")[0];
    a.setAttribute("onclick", href);

    var item;
    var value;
    var i;var j; var k; var tmps; var tmpslength; var node;

    // promenne pole
    if (_catalogue_variables_fields) {
        for (i = 0;i<_catalogue_variables_fields.length;i++) {
            item = _catalogue_variables_fields[i];
            value = xmlDoc.getElementsByTagName("fields")[0].getElementsByTagName(item)[0].childNodes[0].nodeValue;
            document.getElementById("_cat_param_"+item).innerHTML = value;
        }
    }

    // omezeni vyberu
    var filters = xmlDoc.getElementsByTagName("filters")[0];
    var filterslength = filters.childNodes.length;
    if (filterslength) {
        var fname;
        for (i=0;i<filterslength;i++) {
            fname = filters.childNodes[0].nodeName;
            for (var j=0;j<slcts.length;j++) {
                if (slcts[j].getAttribute("name") == ("variation_value_"+fname)) {
                    tmps = slcts[j].getElementsByTagName("option");
                    tmpslength = tmps.length;
                    for (k=0;k<tmpslength;k++) {
                        // indexy se dekrementuji, proto 0
                        node = tmps[0];
                        node.parentNode.removeChild(node);
                    }
                    for (k=0;k<filters.childNodes[0].childNodes.length;k++) {
                        node = filters.childNodes[0].childNodes[k].childNodes[0].nodeValue;
                        slcts[j].options[slcts[j].options.length] = new Option(node, node);
                    }
                    break;
                }
            }
        }
    }

    //nastaveni ceny a id nakupu
    var tds = slcts[0].parentNode.parentNode.getElementsByTagName("td");
    var cn = "class";
    for (i=0;i<tds.length;i++) {
        node = tds[i];
        try {
            if (!node.getAttribute(cn)) cn = "className";
            if ((node.getAttribute(cn).indexOf("eshop_price") != -1)) {
                node.innerHTML = xmlDoc.getElementsByTagName("price")[0].childNodes[0].nodeValue;
            }
        } catch (e) {
          // at to funguje i ve ff i v ie
        }
    }
}

function catalogueHandleRequestStateChange() {
    //request state has changed
    if (ax.readyState==4) {//process is completed
        if (ax.status==200) {
            //http status is OK
            catalogue_ajax_proceed();
        }
    }
}