Bug 132914 "Invalid page number" error message is hard coded.
"Invalid page number" error message is hard coded in DocumentProcessor.java. This must be externalized into *.properties file. If there are other hard coded error messages, please also externalize.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/BirtViewerReportService.java
return getPage( docName, pageNum + "", renderOptions, activeIds );
	}
	public ByteArrayOutputStream getPageByObjectId( String docName,
			String objectId, InputOptions renderOptions, List activeIds )
			throws ReportServiceException
	{
		
		return null;
	}
	public ByteArrayOutputStream renderReportlet( String docName,
			String objectId, InputOptions renderOptions, List activeIds )
			throws ReportServiceException
	{
		
		
		
		return getPageByObjectId( docName, objectId, renderOptions, activeIds );
	}
	public void renderReport( String docName, String pageRange,
			InputOptions renderOptions, OutputStream out )
			throws ReportServiceException
	{
		IReportDocument doc = ReportEngineService.getInstance( )
				.openReportDocument( getReportDesignName( renderOptions ),
						docName );
		HttpServletRequest request = (HttpServletRequest) renderOptions
				.getOption( InputOptions.OPT_REQUEST );
		Locale locale = (Locale) renderOptions
				.getOption( InputOptions.OPT_LOCALE );