hStack.addMember(vStack);
TransferImgButton arrowImg = new TransferImgButton(TransferImgButton.RIGHT);
arrowImg.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
projectGrid.transferSelectedData(employeesGrid);
}
});
hStack.addMember(arrowImg);
VStack vStack2 = new VStack();