$(document).ready(function(){ 
    // Table sorter.
    $("#exchange-rates").tablesorter();
    //$("#exchange-rates").tablesorter({sortList:[[0,0],[2,1]], widgets: ['zebra']});
    //$("#options").tablesorter({sortList: [[0,0]], headers: { 3:{sorter: false}, 4:{sorter: false}}}); 
});