(function(){
var cleanNumber = function(i) {
return i.replace(/[^\-?0-9.]/g, '');
},
compareNumber = function(a, b) {
a = parseFloat(a);
b = parseFloat(b);
a = isNaN(a) ? 0 : a;
b = isNaN(b) ? 0 : b;
return a - b;
};
Tablesort.extend('number', function(item) {
return item.match(/^[-+]?[£\x24Û¢´€]?\d+\s*([,\.]\d{0,2})/) || // Prefixed currency
item.match(/^[-+]?\d+\s*([,\.]\d{0,2})?[£\x24Û¢´€]/) || // Suffixed currency
item.match(/^[-+]?(\d)*-?([,\.]){0,1}-?(\d)+([E,e][\-+][\d]+)?%?$/); // Number
}, function(a, b) {
a = cleanNumber(a);
b = cleanNumber(b);
return compareNumber(b, a);
});
}());