Yes.
I create what I want by this code:
var employeeWorks = new Kwf.Auto.GridPanel({
               controllerUrl   : '/exceluploads',
               region          : 'center',
               height          : 600,
               resizable       : true,
               split           : true,
               title           : 'Данные по сотрудникам',
			   tbar: [  
					'->',
					{
						text:'Выгрузки',
						icon: '/assets/silkicons/page_excel.png',
						cls: 'x-btn-text-icon',
						menu: [{
							text:'Выгрузка EXXON',
							icon: '/assets/silkicons/page_excel.png',
							cls: 'x-btn-text-icon',
						},{	
							text:'Выгрузка SEIC',
							icon: '/assets/silkicons/page_excel.png',
							cls: 'x-btn-text-icon'
						}
						]
					},      
				   ]
        });
See tbar.jpg screen with 1 and 2 areas... 
But it creates +1 panel higher of standard panel =(
I want to change Export to excel button (area 1) to my dropdown buttons (area 2). How to do this?
And click on element of dropdown menu I want to create modal gialog with 2 datepickers - start date, end date and buttons OK, Cancel. And after click OK Excel unloading starts from start date to end date of data. How to do this too? =)