function number_format (number, decimals, dec_point, thousands_sep) {
	var n = number, prec = decimals;

	var toFixedFix = function (n,prec) {
		var k = Math.pow(10,prec);
		return (Math.round(n*k)/k).toString();
	};

	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) ? toFixedFix(n, prec) : toFixedFix(Math.round(n), prec); //fix for IE parseFloat(0.55).toFixed(0) = 0;
	var abs = toFixedFix(Math.abs(n), 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);
	}

	var decPos = s.indexOf(dec);
	
	if (prec >= 1 && decPos !== -1 && (s.length-decPos-1) < prec) {
		s += new Array(prec-(s.length-decPos-1)).join(0)+'0';
	}
	else if (prec >= 1 && decPos === -1) {
		s += dec+new Array(prec).join(0)+'0';
	}

	return s;
}

function formatBytes(size) {
	if (size >= 1024 * 1024 * 1024) //GB
	{
		return(number_format((size / (1024 * 1024 * 1024)), 1) + "GB");
	}
	else if (size >= 1024 * 1024) //MB
	{
		return(number_format((size / (1024 * 1024)), 1) + "MB");
	}
	else if (size >= 1024) //KB
	{
		return(number_format((size / (1024)), 1) + "KB");
	}

	return(number_format(size, 0) + "B");
}