The poster behind the gods shows the moon calendar from which people can read their 'luck' during the '98th year of the Republic of China'.
Taiwan uses a particular system of counting the years that starts with the establishment of the 'Republic of China' in 1911. In 2009 it was the '98th year of the Republic'. This poster is an example from a temple in Taiwan, but also in business Taiwan uses this way of counting years, as of course opposed to the 'People's Republic of China'.
Quite complex all these calendars!
The People's Republic of China uses the Gregorian calendar and the traditional moon calendar.
Taiwan uses the Gregorian calendar, the traditional moon calendar plus it's own system starting in 1911.