Bug 390669 [Accessibility]Press 'Tab' doesn't focus on the next report item when adding relative period aggregation.
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/dialogs/CrosstabBindingDialogHelper.java
updateRemoveBtnState( );
		}
	}
	private boolean hasInitDialog = false;
	public void initDialog( )
	{
		cmbType.setItems( dataTypes );
		txtDisplayName.setFocus( );
		if ( isAggregate( ) )
		{
			initFunction( );
			initFilter( );
			
			{
				initAggOn( );
			}
		}
		if ( isTimePeriod( ) )
		{
			initTimeDimension( );
			initReferenceDate( );
			initCalculationTypeCombo( getTimeDimsionName( ) );
		}
		if ( getBinding( ) == null )
		{
			if ( cmbType.getSelectionIndex( ) < 0 )
			{
				setTypeSelect( dataTypes[0] );
			}
			if ( isTimePeriod( ) )