//ajax
var http_request = false;

function makeRequest(url, idname) {
    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('Cannot create an XMLHTTP instance');
        return false;
    }
    http_request.onreadystatechange = function() { alertContents(http_request, idname); };
    http_request.open('GET', url, true);
    http_request.send(null);
}

function alertContents(http_request, idname) {
    if (http_request.readyState == 4) {
        if (http_request.status == 200) {
            document.getElementById(idname).innerHTML = http_request.responseText;
        } else {
            alert('There was a problem with the request.');
        }
    }else{
        document.getElementById(idname).innerHTML = '';
    }
}
function sell(p) {
  if(p == 2) {
    document.getElementById('s_po').style.display = 'inline';
    document.getElementById('kolvo').style.display = 'inline';
  }else{
    document.getElementById('s_po').style.display = 'none';
    document.getElementById('kolvo').style.display = 'none';  
  } 
}

///////////////////catalog//////////////////////////
function changeCheck(id) {
    d = document;
    if(d.getElementById('c' + id).checked == true) {
        d.getElementById('c' + id).checked = false;
        d.getElementById('n' + id).disabled = true;
    }else{
        d.getElementById('c' + id).checked = true;
        d.getElementById('n' + id).disabled = false;
    }
}
function showhide(id) {
  d = document.getElementById(id);
  if(d.style.display == 'none') d.style.display = 'inline';
  else d.style.display = 'none';
}

function menuOpen(child) {
    var v = document.getElementById(child);
    if (null != v)
        v.className = v.className == "collapsed" ? "expanded" : "collapsed";
}
function img(small, big) {
  document.getElementById("item_s_name").src = '/img/'+small;
  document.getElementById("item_b_name").href = '/img/'+big;
}