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/ReportEngineService.java
HTMLEmitterConfig emitterConfig = new HTMLEmitterConfig( );
		emitterConfig.setActionHandler( new HTMLActionHandler( ) );
		imageHandler = new HTMLServerImageHandler( );
		emitterConfig.setImageHandler( imageHandler );
		config.getEmitterConfigs( ).put( "html", emitterConfig ); 
		
		String resourcePath = servletConfig.getServletContext( )
				.getInitParameter(
						ParameterAccessor.INIT_PARAM_BIRT_RESOURCE_PATH );
		boolean isResourceOk = true;
		if ( resourcePath == null || resourcePath.trim( ).length( ) <= 0
				|| ParameterAccessor.isRelativePath( resourcePath ) )
		{
			isResourceOk = false;
		}
		else
		{
			File resourceFile = new File( resourcePath );
			if ( !resourceFile.exists( ) )
			{
				isResourceOk = resourceFile.mkdirs( );
			}
		}
		if ( isResourceOk )
		{
			SessionHandle.setBirtResourcePath( resourcePath );
		}
		
		imageDirectory = servletConfig.getServletContext( ).getInitParameter(