The source code

    /*
     * Ext JS Library 2.2
     * Copyright(c) 2006-2008, Ext JS, LLC.
     * licensing@extjs.com
     *
     * http://extjs.com/license
     */

    Ext.QuickTips.init();

    Ext.onReady(function(){

        var fp = new Ext.FormPanel({
            id: 'status-form',
            renderTo: Ext.getBody(),
            labelWidth: 75,
            width: 350,
            buttonAlign: 'right',
            border: false,
            bodyStyle: 'padding:10px 10px 0;',
            defaults: {
                anchor: '95%',
                allowBlank: false,
                selectOnFocus: true,
                msgTarget: 'side'
            },
            items:[{
                xtype: 'textfield',
                fieldLabel: 'Name',
                blankText: 'Name is required'
            },{
                xtype: 'datefield',
                fieldLabel: 'Birthdate',
                blankText: 'Birthdate is required'
            }],
            buttons: [{
                text: 'Save',
                handler: function(){
                    if(fp.getForm().isValid()){
                        var sb = Ext.getCmp('form-statusbar');
                        sb.showBusy('Saving form...');
                        fp.getEl().mask();
                        fp.getForm().submit({
                            url: 'fake.php',
                            success: function(){
                                sb.setStatus({
                                    text:'Form saved!',
                                    iconCls:'',
                                    clear: true
                                });
                                fp.getEl().unmask();
                            }
                        });
                    }
                }
            }]
        });

        new Ext.Panel({
            title: 'StatusBar with Integrated Form Validation',
            renderTo: Ext.getBody(),
            width: 350,
            autoHeight: true,
            layout: 'fit',
            items: fp,
            bbar: new Ext.ux.StatusBar({
                id: 'form-statusbar',
                defaultText: 'Ready',
                plugins: new Ext.ux.ValidationStatus({form:'status-form'})
            })
        });

    });