gistfile1.txt

appendChild : function(node, suppressEvents, commit) {
                    var me = this,
                        i, ln,
                        index,
                        oldParent,
                        ps;

                    
                    if (Ext.isArray(node)) {
                        
                        me.callStore('suspendAutoSync');
                        for (i = 0, ln = node.length - 1; i < ln; i++) {
                            me.appendChild(node[i]);
                        }
                        
                        me.callStore('resumeAutoSync');
                        me.appendChild(node[ln]);
                    } else {
                        
                        node = me.createNode(node);

                        if (suppressEvents !== true && (!me.hasListeners.beforeappend || me.fireEvent("beforeappend", me, node) === false)) {
                            return false;
                        }

                        index = me.childNodes.length;
                        oldParent = node.parentNode;

                        
                        if (oldParent) {
                            if (suppressEvents !== true && (!me.hasListeners.beforeremove || node.fireEvent("beforemove", node, oldParent, me, index) === false)) {
                                return false;
                            }
                            oldParent.removeChild(node, false, false, true);
                        }

                        index = me.childNodes.length;
                        if (index === 0) {
                            me.setFirstChild(node);
                        }

                        me.childNodes.push(node);
                        node.parentNode = me;
                        node.nextSibling = null;

                        me.setLastChild(node);

                        ps = me.childNodes[index - 1];
                        if (ps) {
                            node.previousSibling = ps;
                            ps.nextSibling = node;
                            ps.updateInfo(commit);
                        } else {
                            node.previousSibling = null;
                        }

                        node.updateInfo(commit);

                        
                        if (!me.isLoaded()) {
                            me.set('loaded', true);
                        } else if (me.childNodes.length === 1) {
                            me.triggerUIUpdate();
                        }

                        if(!node.isLeaf() && node.phantom) {
                            node.set('loaded', true);
                        }

                        if (suppressEvents !== true) {
                            me.fireEvent("append", me, node, index);

                            if (oldParent) {
                                node.fireEvent("move", node, oldParent, me, index);
                            }
                        }

                        return node;
                    }
                },