Bug 146709 Dates still do not work from main report to sub reports...
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/HTMLActionHandler.java
* @param action
	 *            instance of the IAction instance
	 * @param context
	 *            the context for building the action string
	 * @return a URL
	 */
	protected String buildDrillAction( IAction action, Object context )
	{
		String baseURL = null;
		if ( context != null )
		{
			if (context instanceof HTMLRenderContext)
			{
				baseURL = ( (HTMLRenderContext) context ).getBaseURL( );
			}
			if (context instanceof PDFRenderContext)
			{
				baseURL = ( (PDFRenderContext) context ).getBaseURL( );
			}
		}
		if ( baseURL == null )
		{
			baseURL = "run";
		}
		StringBuffer link = new StringBuffer( );
		String reportName = action.getReportName( );
		if ( reportName != null && !reportName.equals( "" ) ) 
		{
			String format = action.getFormat( );
			if ( !"html".equalsIgnoreCase( format ) )