(function($) {
	$.fn.priceFormat = function(options) {
		var defaults = {
			prefix : 'US$ ',
			centsSeparator : '.',
			thousandsSeparator : ',',
			limit : false,
			centsLimit : 2
		};
		var options = $.extend(defaults, options);
		return this.each(function() {
			var obj = $(this);
			var is_number = /[0-9]/;
			var prefix = options.prefix;
			var centsSeparator = options.centsSeparator;
			var thousandsSeparator = options.thousandsSeparator;
			var limit = options.limit;
			var centsLimit = options.centsLimit;
			function to_numbers(str) {
				var formatted = '';
				for ( var i = 0; i < (str.length); i++) {
					char = str.charAt(i);
					if (formatted.length == 0 && char == 0)
						char = false;
					if (char && char.match(is_number)) {
						if (limit) {
							if (formatted.length < limit)
								formatted = formatted + char;
						} else {
							formatted = formatted + char;
						}
					}
				}
				return formatted;
			}
			function fill_with_zeroes(str) {
				while (str.length < (centsLimit + 1))
					str = '0' + str;
				return str;
			}
			function price_format(str) {
				var formatted = fill_with_zeroes(to_numbers(str));
				var thousandsFormatted = '';
				var thousandsCount = 0;
				var centsVal = formatted.substr(formatted.length - centsLimit,
						centsLimit);
				var integerVal = formatted.substr(0, formatted.length
						- centsLimit);
				formatted = integerVal + centsSeparator + centsVal;
				if (thousandsSeparator) {
					for ( var j = integerVal.length; j > 0; j--) {
						char = integerVal.substr(j - 1, 1);
						thousandsCount++;
						if (thousandsCount % 3 == 0)
							char = thousandsSeparator + char;
						thousandsFormatted = char + thousandsFormatted;
					}
					if (thousandsFormatted.substr(0, 1) == thousandsSeparator)
						thousandsFormatted = thousandsFormatted.substring(1,
								thousandsFormatted.length);
					formatted = thousandsFormatted + centsSeparator + centsVal;
				}
				if (prefix)
					formatted = prefix + formatted;
				return formatted;
			}
			function key_check(e) {
				var code = (e.keyCode ? e.keyCode : e.which);
				var typed = String.fromCharCode(code);
				var functional = false;
				var str = obj.val();
				var newValue = price_format(str + typed);
				if (code >= 96 && code <= 105)
					functional = true;
				if (code == 8)
					functional = true;
				if (code == 9)
					functional = true;
				if (code == 13)
					functional = true;
				if (code == 37)
					functional = true;
				if (code == 39)
					functional = true;
				if (!functional) {
					e.preventDefault();
					e.stopPropagation();
					if (str != newValue)
						obj.val(newValue);
				}
			}
			function price_it() {
				var str = obj.val();
				var price = price_format(str);
				if (str != price)
					obj.val(price);
			}
			$(this).bind('keydown', key_check);
			$(this).bind('keyup', price_it);
			if ($(this).val().length > 0)
				price_it();
		});
	};
})(jQuery);