The source code

    // Sample desktop configuration
    MyDesktop = new Ext.app.App({
    	init :function(){
    		Ext.QuickTips.init();
    	},

    	getModules : function(){
    		return [
    			new MyDesktop.GridWindow(),
                new MyDesktop.TabWindow(),
                new MyDesktop.AccordionWindow(),
                new MyDesktop.BogusMenuModule(),
                new MyDesktop.BogusModule()
    		];
    	},

        // config for the start menu
        getStartConfig : function(){
            return {
                title: 'Jack Slocum',
                iconCls: 'user',
                toolItems: [{
                    text:'Settings',
                    iconCls:'settings',
                    scope:this
                },'-',{
                    text:'Logout',
                    iconCls:'logout',
                    scope:this
                }]
            };
        }
    });

    /*
     * Example windows
     */
    MyDesktop.GridWindow = Ext.extend(Ext.app.Module, {
        id:'grid-win',
        init : function(){
            this.launcher = {
                text: 'Grid Window',
                iconCls:'icon-grid',
                handler : this.createWindow,
                scope: this
            }
        },

        createWindow : function(){
            var desktop = this.app.getDesktop();
            var win = desktop.getWindow('grid-win');
            if(!win){
                win = desktop.createWindow({
                    id: 'grid-win',
                    title:'Grid Window',
                    width:740,
                    height:480,
                    iconCls: 'icon-grid',
                    shim:false,
                    animCollapse:false,
                    constrainHeader:true,

                    layout: 'fit',
                    items:
                        new Ext.grid.GridPanel({
                            border:false,
                            ds: new Ext.data.Store({
                                reader: new Ext.data.ArrayReader({}, [
                                   {name: 'company'},
                                   {name: 'price', type: 'float'},
                                   {name: 'change', type: 'float'},
                                   {name: 'pctChange', type: 'float'}
                                ]),
                                data: Ext.grid.dummyData
                            }),
                            cm: new Ext.grid.ColumnModel([
                                new Ext.grid.RowNumberer(),
                                {header: "Company", width: 120, sortable: true, dataIndex: 'company'},
                                {header: "Price", width: 70, sortable: true, renderer: Ext.util.Format.usMoney, dataIndex: 'price'},
                                {header: "Change", width: 70, sortable: true, dataIndex: 'change'},
                                {header: "% Change", width: 70, sortable: true, dataIndex: 'pctChange'}
                            ]),

                            viewConfig: {
                                forceFit:true
                            },
                            //autoExpandColumn:'company',

                            tbar:[{
                                text:'Add Something',
                                tooltip:'Add a new row',
                                iconCls:'add'
                            }, '-', {
                                text:'Options',
                                tooltip:'Blah blah blah blaht',
                                iconCls:'option'
                            },'-',{
                                text:'Remove Something',
                                tooltip:'Remove the selected item',
                                iconCls:'remove'
                            }]
                        })
                });
            }
            win.show();
        }
    });

    MyDesktop.TabWindow = Ext.extend(Ext.app.Module, {
        id:'tab-win',
        init : function(){
            this.launcher = {
                text: 'Tab Window',
                iconCls:'tabs',
                handler : this.createWindow,
                scope: this
            }
        },

        createWindow : function(){
            var desktop = this.app.getDesktop();
            var win = desktop.getWindow('tab-win');
            if(!win){
                win = desktop.createWindow({
                    id: 'tab-win',
                    title:'Tab Window',
                    width:740,
                    height:480,
                    iconCls: 'tabs',
                    shim:false,
                    animCollapse:false,
                    border:false,
                    constrainHeader:true,

                    layout: 'fit',
                    items:
                        new Ext.TabPanel({
                            activeTab:0,

                            items: [{
                                title: 'Tab Text 1',
                                header:false,
                                html : 'Something useful would be in here.',
                                border:false
                            },{
                                title: 'Tab Text 2',
                                header:false,
                                html : 'Something useful would be in here.',
                                border:false
                            },{
                                title: 'Tab Text 3',
                                header:false,
                                html : 'Something useful would be in here.',
                                border:false
                            },{
                                title: 'Tab Text 4',
                                header:false,
                                html : 'Something useful would be in here.',
                                border:false
                            }]
                        })
                });
            }
            win.show();
        }
    });

    MyDesktop.AccordionWindow = Ext.extend(Ext.app.Module, {
        id:'acc-win',
        init : function(){
            this.launcher = {
                text: 'Accordion Window',
                iconCls:'accordion',
                handler : this.createWindow,
                scope: this
            }
        },

        createWindow : function(){
            var desktop = this.app.getDesktop();
            var win = desktop.getWindow('acc-win');
            if(!win){
                win = desktop.createWindow({
                    id: 'acc-win',
                    title: 'Accordion Window',
                    width:250,
                    height:400,
                    iconCls: 'accordion',
                    shim:false,
                    animCollapse:false,
                    constrainHeader:true,

                    tbar:[{
                        tooltip:{title:'Rich Tooltips', text:'Let your users know what they can do!'},
                        iconCls:'connect'
                    },'-',{
                        tooltip:'Add a new user',
                        iconCls:'user-add'
                    },' ',{
                        tooltip:'Remove the selected user',
                        iconCls:'user-delete'
                    }],

                    layout:'accordion',
                    border:false,
                    layoutConfig: {
                        animate:false
                    },

                    items: [
                        new Ext.tree.TreePanel({
                            id:'im-tree',
                            title: 'Online Users',
                            loader: new Ext.tree.TreeLoader(),
                            rootVisible:false,
                            lines:false,
                            autoScroll:true,
                            tools:[{
                                id:'refresh',
                                on:{
                                    click: function(){
                                        var tree = Ext.getCmp('im-tree');
                                        tree.body.mask('Loading', 'x-mask-loading');
                                        tree.root.reload();
                                        tree.root.collapse(true, false);
                                        setTimeout(function(){ // mimic a server call
                                            tree.body.unmask();
                                            tree.root.expand(true, true);
                                        }, 1000);
                                    }
                                }
                            }],
                            root: new Ext.tree.AsyncTreeNode({
                                text:'Online',
                                children:[{
                                    text:'Friends',
                                    expanded:true,
                                    children:[{
                                        text:'Jack',
                                        iconCls:'user',
                                        leaf:true
                                    },{
                                        text:'Brian',
                                        iconCls:'user',
                                        leaf:true
                                    },{
                                        text:'Jon',
                                        iconCls:'user',
                                        leaf:true
                                    },{
                                        text:'Tim',
                                        iconCls:'user',
                                        leaf:true
                                    },{
                                        text:'Nige',
                                        iconCls:'user',
                                        leaf:true
                                    },{
                                        text:'Fred',
                                        iconCls:'user',
                                        leaf:true
                                    },{
                                        text:'Bob',
                                        iconCls:'user',
                                        leaf:true
                                    }]
                                },{
                                    text:'Family',
                                    expanded:true,
                                    children:[{
                                        text:'Kelly',
                                        iconCls:'user-girl',
                                        leaf:true
                                    },{
                                        text:'Sara',
                                        iconCls:'user-girl',
                                        leaf:true
                                    },{
                                        text:'Zack',
                                        iconCls:'user-kid',
                                        leaf:true
                                    },{
                                        text:'John',
                                        iconCls:'user-kid',
                                        leaf:true
                                    }]
                                }]
                            })
                        }), {
                            title: 'Settings',
                            html:'Something useful would be in here.',
                            autoScroll:true
                        },{
                            title: 'Even More Stuff',
                            html : 'Something useful would be in here.'
                        },{
                            title: 'My Stuff',
                            html : 'Something useful would be in here.'
                        }
                    ]
                });
            }
            win.show();
        }
    });

    // for example purposes
    var windowIndex = 0;

    MyDesktop.BogusModule = Ext.extend(Ext.app.Module, {
        init : function(){
            this.launcher = {
                text: 'Window '+(++windowIndex),
                iconCls:'bogus',
                handler : this.createWindow,
                scope: this,
                windowId:windowIndex
            }
        },

        createWindow : function(src){
            var desktop = this.app.getDesktop();
            var win = desktop.getWindow('bogus'+src.windowId);
            if(!win){
                win = desktop.createWindow({
                    id: 'bogus'+src.windowId,
                    title:src.text,
                    width:640,
                    height:480,
                    html : 'Something useful would be in here.',
                    iconCls: 'bogus',
                    shim:false,
                    animCollapse:false,
                    constrainHeader:true
                });
            }
            win.show();
        }
    });

    MyDesktop.BogusMenuModule = Ext.extend(MyDesktop.BogusModule, {
        init : function(){
            this.launcher = {
                text: 'Bogus Submenu',
                iconCls: 'bogus',
                handler: function() {
    				return false;
    			},
                menu: {
                    items:[{
                        text: 'Bogus Window '+(++windowIndex),
                        iconCls:'bogus',
                        handler : this.createWindow,
                        scope: this,
                        windowId: windowIndex
                        },{
                        text: 'Bogus Window '+(++windowIndex),
                        iconCls:'bogus',
                        handler : this.createWindow,
                        scope: this,
                        windowId: windowIndex
                        },{
                        text: 'Bogus Window '+(++windowIndex),
                        iconCls:'bogus',
                        handler : this.createWindow,
                        scope: this,
                        windowId: windowIndex
                        },{
                        text: 'Bogus Window '+(++windowIndex),
                        iconCls:'bogus',
                        handler : this.createWindow,
                        scope: this,
                        windowId: windowIndex
                        },{
                        text: 'Bogus Window '+(++windowIndex),
                        iconCls:'bogus',
                        handler : this.createWindow,
                        scope: this,
                        windowId: windowIndex
                    }]
                }
            }
        }
    });

    // Array data for the grid
    Ext.grid.dummyData = [
        ['3m Co',71.72,0.02,0.03,'9/1 12:00am'],
        ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am'],
        ['American Express Company',52.55,0.01,0.02,'9/1 12:00am'],
        ['American International Group, Inc.',64.13,0.31,0.49,'9/1 12:00am'],
        ['AT&T Inc.',31.61,-0.48,-1.54,'9/1 12:00am'],
        ['Caterpillar Inc.',67.27,0.92,1.39,'9/1 12:00am'],
        ['Citigroup, Inc.',49.37,0.02,0.04,'9/1 12:00am'],
        ['Exxon Mobil Corp',68.1,-0.43,-0.64,'9/1 12:00am'],
        ['General Electric Company',34.14,-0.08,-0.23,'9/1 12:00am'],
        ['General Motors Corporation',30.27,1.09,3.74,'9/1 12:00am'],
        ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am'],
        ['Honeywell Intl Inc',38.77,0.05,0.13,'9/1 12:00am'],
        ['Intel Corporation',19.88,0.31,1.58,'9/1 12:00am'],
        ['Johnson & Johnson',64.72,0.06,0.09,'9/1 12:00am'],
        ['Merck & Co., Inc.',40.96,0.41,1.01,'9/1 12:00am'],
        ['Microsoft Corporation',25.84,0.14,0.54,'9/1 12:00am'],
        ['The Coca-Cola Company',45.07,0.26,0.58,'9/1 12:00am'],
        ['The Procter & Gamble Company',61.91,0.01,0.02,'9/1 12:00am'],
        ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am'],
        ['Walt Disney Company (The) (Holding Company)',29.89,0.24,0.81,'9/1 12:00am']
    ];