In the DETAILS page of http://s04.flagcounter.com/countries/jTsb/, give the option to click on Country or Unique Visitors or Last New Visitor, and have the system sort according to that heading (and not just by the default sorting of descending number of visitors).

The next step would be to implement an enhancement where each click on a heading (e.g., Country) would toggle the sorting order from descending to ascending.

Obviously, the sorting order of Unique Visitors would be numeric, while the sorting of Country and           Last New Visitor would be lexicographic (or alphabetic),