function number_format( number, decimals, dec_point, thousands_sep )
{
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); 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;
}