
<!--
	function Level(i, v, x)
		{
		this.i = i;
		this.v = v;
		this.x = x;
		}

	levels = new Array();
	levels[0] = new Level('I', 'V', 'X');
	levels[1] = new Level('X', 'L', 'C');
	levels[2] = new Level('C', 'D', 'M');

	function calcDigit(d, l)
		{
		if (l > 2)
			{
			str = '';
			for (var k = 1; k <= d * Math.pow(10, l - 3); k++)
				str += 'M';
			return str;
			}
		else
			switch (d)
				{
				case 1:
					return levels[l].i;
					break;
				case 2:
					return levels[l].i + levels[l].i;
					break;
				case 3:
					return levels[l].i + levels[l].i + levels[l].i;
					break;
				case 4:
					return levels[l].i + levels[l].v;
					break;
				case 5:
					return levels[l].v;
					break;
				case 6:
					return levels[l].v + levels[l].i;
					break;
				case 7:
					return levels[l].v + levels[l].i + levels[l].i;
					break;
				case 8:
					return levels[l].v + levels[l].i + levels[l].i + levels[l].i;
					break;
				case 9:
					return levels[l].i + levels[l].x;
					break;
				default:
					return '';
					break;
				}
		}

	function toRoman(n)
		{
		var r = '';
		for (var c = 0; c < n.length; c++)
			r += calcDigit(parseInt(n.charAt(c)), n.length - c - 1);
		return r;
		}

	val = new Array(255);

	val['I'.charCodeAt(0)] = 1;
	val['V'.charCodeAt(0)] = 5;
	val['X'.charCodeAt(0)] = 10;
	val['L'.charCodeAt(0)] = 50;
	val['C'.charCodeAt(0)] = 100;
	val['D'.charCodeAt(0)] = 500;
	val['M'.charCodeAt(0)] = 1000;

	function fromRoman(n)
		{
		n = n.toUpperCase();

		var result = 0;
		var lastDigit = 0;
		for(var pos = n.length - 1; pos >= 0; pos--)
			{
			var curDigit = val[n.charCodeAt(pos)];

			if (curDigit == NaN)
				return 'Invalid roman number!';

			if (curDigit >= lastDigit)
				result += curDigit;
			else
				result -= curDigit;

			lastDigit = curDigit;			
			}

		return result;
		}

	function isNumeric(s)
		{
		for (var pos = 0; pos < s.length; pos++)
			if (s.charAt(pos) < '0' || s.charAt(pos) > '9')
				return false;
		return true;
		}

	function get(f)
		{
		if (isNumeric(f.inp.value))
			f.out.value = toRoman(f.inp.value);
		else
			f.out.value = fromRoman(f.inp.value);
		}

// -->