String.prototype.addCommas = function()
{
    var nStr = this;
	nStr += '';
	x = nStr.split('.');
	x1 = x[0];
	x2 = x.length > 1 ? '.' + x[1] : '';
	var rgx = /(\d+)(\d{3})/;
	while (rgx.test(x1)) {
		x1 = x1.replace(rgx, '$1' + ',' + '$2');
	}
	return x1 + x2;
}


String.prototype.linkify = function()
{
    var nStr = this;
    var rgx = /(http:\/\/\S+)/;
    return nStr.replace(rgx, '<a href="$1">$1</a>');
}