German money format

format_number.js

function format_number($number, $use_fixed) {
	"use strict";
	if($use_fixed !== false){
		$number = $number.toFixed(2) + '';
	}
	else
	{
		$number = $number + '';
	}
	var $array = $number.split('.');
	var $before_comma = $array[0];
	var $after_comma;
	if($number.length > 1){
		$after_comma = ',' + $array[1];
	}
	else
	{
		$after_comma = '';
	}
	var $regex = /(\d+)(\d{3})/;
	while ($regex.test($before_comma)){
		$before_comma = $before_comma.replace($regex, '$1' + '.' + '$2');
	}

	if($after_comma === ',undefined' ){
		return $before_comma;
	}
	return $before_comma + $after_comma;
}