function number_format( number, decimals, dec_point, thousands_sep ) {
//	Formats a number with grouped thousands
//	version: 902.1517
//	discuss at: http://phpjs.org/functions/number_format
//	+   original by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
//	+   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
//	+     bugfix by: Michael White (http://getsprink.com)
//	+     bugfix by: Benjamin Lupton
//	+     bugfix by: Allan Jensen (http://www.winternet.no)
//	+    revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
//	+     bugfix by: Howard Yeend
//	+    revised by: Luke Smith (http://lucassmith.name)
//	+     bugfix by: Diogo Resende
//	+     bugfix by: Rival
//	%        note 1: For 1000.55 result with precision 1 in FF/Opera is 1,000.5, but in IE is 1,000.6
//	*     example 1: number_format(1234.56);
//	*     returns 1: '1,235'
//	*     example 2: number_format(1234.56, 2, ',', ' ');
//	*     returns 2: '1 234,56'
//	*     example 3: number_format(1234.5678, 2, '.', '');
//	*     returns 3: '1234.57'
//	*     example 4: number_format(67, 2, ',', '.');
//	*     returns 4: '67,00'
//	*     example 5: number_format(1000);
//	*     returns 5: '1,000'
//	*     example 6: number_format(67.311, 2);
//	*     returns 6: '67.31'
	var n = number, prec = decimals;
	n = !isFinite(+n) ? 0 : +n;
	prec = !isFinite(+prec) ? 0 : Math.abs(prec);
	var sep = (typeof thousands_sep == "undefined") ? ',' : thousands_sep;
	var dec = (typeof dec_point == "undefined") ? '.' : dec_point;
	var s = (prec > 0) ? n.toFixed(prec) : Math.round(n).toFixed(prec); //fix for IE parseFloat(0.55).toFixed(0) = 0;
	var abs = Math.abs(n).toFixed(prec);
	var _, i;
	if (abs >= 1000) {
		_ = abs.split(/\D/);
		i = _[0].length % 3 || 3;
		_[0] = s.slice(0,i + (n < 0)) +
		_[0].slice(i).replace(/(\d{3})/g, sep+'$1');
		s = _.join(dec);
	} else {
		s = s.replace('.', dec);
	}
	return s;
}