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
IResourceLocator.MESSAGE_FILE );
				if ( url != null )
					urls.add( url );
			}
			return urls.toArray( new URL[0] );
		}
	}
	private String[] getBaseNames( )
	{
		List<String> resources = SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( )
				.getIncludeResources( );
		if ( resources == null )
			return null;
		else
			return resources.toArray( new String[0] );
	}
	private URL[] getResourceURLs( )
	{
		String[] baseNames = getBaseNames( );
		if ( baseNames == null )
			return null;
		else
		{
			URL[] urls = new URL[baseNames.length];
			for ( int i = 0; i < baseNames.length; i++ )
			{
				urls[i] = SessionHandleAdapter.getInstance( )
						.getReportDesignHandle( )
						.findResource( baseNames[i],