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/parameter/ParameterGroupFragment.java
break;
						}
						case ParameterDefinition.CHECK_BOX :
						{
							fragment = new CheckboxParameterFragment(
									scalarParameter );
							break;
						}
					}
				}
				if ( fragment != null )
				{
					fragment.setJSPRootPath( JSPRootPath );
					fragments.add( fragment );
				}
			}
		}
		request.setAttribute( "fragments", fragments ); 
	}
	/**
	 * Override implementation of doPostService.
	 */
	protected String doPostService( HttpServletRequest request,
			HttpServletResponse response ) throws ServletException, IOException
	{
		String className = getClass( ).getName( ).substring(
				getClass( ).getName( ).lastIndexOf( '.' ) + 1 );
		return JSPRootPath + "/pages/parameter/" + className + ".jsp"; 
	}
}