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/presentation/aggregation/layout/FramesetFragment.java
* Override build method.
	 */
	protected void build( )
	{
		addChild( new ToolbarFragment( ) );
		addChild( new ReportFragment( ) );
	}
	/**
	 * Service provided by the fragment. This is the entry point of engine
	 * framgent. It generally includes a JSP page to render a certain part of
	 * web viewer.
	 * 
	 * @param request
	 *            incoming http request
	 * @param response
	 *            http response
	 * @exception ServletException
	 * @exception IOException
	 */
	public void service( HttpServletRequest request,
			HttpServletResponse response ) throws ServletException,
			IOException, BirtException
	{
		BaseAttributeBean attrBean = (BaseAttributeBean) request
				.getAttribute( "attributeBean" ); 
		if ( attrBean != null
				&& !attrBean.isMissingParameter( )
				&& ParameterAccessor.PARAM_FORMAT_PDF
						.equalsIgnoreCase( attrBean.getFormat( ) ) )
		{