/* MaxMind Technologies */
function unit_update(client_id, interf_id, package_id, html_object, desc_object){
  if ($(html_object)){
    var url = 'https://www.maxengine.eu/maxres/frontend.php?template=stonehammer&lang=en&mod=unit&func=unit_ajax_responder&client_id=' + client_id + '&interface_id=' + interf_id + '&package_id=' + package_id;
    next_button_disabled(true); 
    new Ajax.Request(url, { method: 'POST', onSuccess:
      function(response){
        var r = response.responseText.evalJSON(false);
        if (r.length == 2) {
          $(desc_object).update(r[0]);
          $(html_object).update(r[1]);
          adjust_packages_padding();
        }
      }
    });
  }
}

window.onload = function() {
  var ps = $('package_select');
  if (ps != null) {
    $('package_select').observe('click', function(event) {
      if (event.target.tagName === 'LI') {
        $$('#package_select .package_item').each( function(item) {
          item.removeClassName('selected_package');
        }); 
        $(event.target).addClassName('selected_package');
        var client_id = event.target.parentNode.getAttribute('data-client_id');
        var interface_id = event.target.parentNode.getAttribute('data-interface_id');
        var package_id = event.target.getAttribute('data-package_id');
        var hidden_input = document.getElementsByName('package_id')[0];
        hidden_input.setAttribute('value', package_id);
        unit_update(client_id, interface_id, package_id, 'unit_select', 'package_description');
      }
    });
    adjust_packages_padding();
  }
}

function adjust_packages_padding() {
  var height = $('unit_select').getHeight();
  $('package_description').setStyle({ paddingBottom: height+"px" })
}