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/actionhandler/AbstractBaseActionHandler.java
{
					try
					{
						pageNumber = Integer.parseInt( params[i].getValue( ) );
					}
					catch ( NumberFormatException e )
					{
						pageNumber = -1;
					}
					InputOptions options = new InputOptions( );
					options.setOption( InputOptions.OPT_REQUEST, request );
					if ( pageNumber <= 0
							|| pageNumber > getReportService( ).getPageCount( documentName, 
									options, new OutputOptions( ) ) )
					{
						AxisFault fault = new AxisFault( );
						fault.setFaultCode( new QName(
								"DocumentProcessor.getPageNumber( )" ) ); 
						fault.setFaultString( "Invalid page number." ); 
						throw fault;
					}
					break;
				}
			}
		}
		return pageNumber;
	}
	/**
	 * Get page number by bookmark.
	 *