anchor.diff:                        });
                     };
   
  -                  effectAll(1); // Close all headings on load
  +                  // Open/close tree nodes on load based on cookie
  +                  if (this.openCloseCookie() == 'open') {
  +                    effectAll(0);
  +                  } else {
  +                    effectAll(1);
  +                  }
   
                     $parentNodes.closest('.commodity-tree').prepend($controls);
                     $parentNodes.closest('.commodity-tree').append($controls);
  
positive.code:                 $childList[listAction]('visuallyhidden');
                  $branch[branchAction]('open')
                      .attr('title',  titleTxt[action]);
                };
  
                setMembers = function ($branchNode) {
                    var defaultTitle,
  
negative.code:                var evt = document.createEventObject();
                 this.click();
             }
          },
          cookies : {
            set : function (cname, cvalue, exdays) {
              var d = new Date();
              d.setTime(d.getTime() + (exdays*24*60*60*1000));
              var expires = "expires="+d.toUTCString();
              document.cookie = cname + "=" + cvalue + "; " + expires;
            },
            get : function (cname) {
              var name = cname + "=";
              var ca = document.cookie.split(';');
              for(var i = 0; i < ca.length; i++) {
                var c = ca[i];
                while (c.charAt(0) == ' ') {
                  c = c.substring(1);
                }
                if (c.indexOf(name) == 0) {
                  return c.substring(name.length, c.length);
                }
              }
              return "";
            }
          }
        },
        /**
  