Nasty

var str = '';
var fso = new ActiveXObject("Scripting.FileSystemObject");
var ts = fso.OpenTextFile(WSH.Arguments(1));
while(!ts.AtEndOfStream)
	str+=ts.ReadLine();
ts.Close();

function caesarShift (str, amount, alph_len)
{
	if (amount < 0)
	{
		amount = amount + alph_len;
	}

	var output = '';

	for (var i = 0; i < str.length; i ++)
	{
		var c = str.charAt(i);

		if (c.match(/[a-z]/i))
		{
			var code = str.charCodeAt(i);


			if ((code >= 65) && (code <= 90))
			{
				code += 32;
			}

			c = String.fromCharCode(((code - 97 + amount) % alph_len) + 97);
		}

		output += c;
	}
	return output;
};

//WSH.echo(caesarShift('abcbbac', 2, 3));

var freq = new Array();
var input = '';
var ts = fso.OpenTextFile(WSH.Arguments(0));
while(!ts.AtEndOfStream)
{
	input += ts.ReadLine();
	input += '	';
}
ts.Close();

var array = input.split('	');

j = 0;
while(j < array.length-1)
{
	freq[array[j].charCodeAt(0)+32] = array[j+1];
	j+=2;
}

/*for (var e in freq)
	WSH.echo(e+ ' ' + freq[e]);*/

function make_freq(str)
{
	var result = new Array();
	var count = 0;
	for (var t = 0; t < str.length; t++)
	{
		var c = str.charAt(t);
		if (c.match(/[a-z]/i))
		{
			result[c.charCodeAt(0)] = 0;
			count++;

		}
	}

	for (var t = 0; t < str.length; t++)
	{
		var c = str.charAt(t);
		if (c.match(/[a-z]/i))
		{
			result[c.charCodeAt(0)]++;
		}
	}

	for (var e in result)
	{
		result[e] = result[e] /count *100;
	}
	return result;
}
/*var r = make_freq('abab');
for (var e in r)
	WSH.echo(e+ ' ' + r[e]);*/

function min(arr)
{
	min = arr[0];
	index = 0;
	WSH.echo(arr.length);
	for (var e = 0; e<arr.length; e++)
	{
		WSH.echo(arr[e]);
		if (arr[e] < min)
		{
			min = arr[e];
			index = e;
		}
	}
	return index;
}
function caesarDescription(str, alph_len)
{
	var fact_freq = make_freq(str);
	for (var e in fact_freq)
		WSH.echo(e+ ' ' + fact_freq[e])
	for (var e in freq)
		WSH.echo(e+ ' ' + freq[e])
	var arr = new Array();
	for (var shift = 0; shift < alph_len; shift++)
	{
		sum = 0;
		for (var j = 0; j< alph_len; j++)
		{
			sum += Math.pow((fact_freq[97+j] - freq[(97+j+shift)%alph_len]),2);
		}
		arr.push(sum);
	}
	WSH.echo(arr.join(' '));
	var new_shift = min(arr);
	WSH.echo(new_shift);
	var out = '';
	for (var i =0; i<str.length; i++)
	{
		out += String.fromCharCode(str.charCodeAt(i)+new_shift);
	}
	return out;
}

var shift_str = caesarShift(str, 4, 26);
//WSH.echo(shift_str);
var descr_str = caesarDescription(shift_str, 26);
//WSH.echo(descr_str);
var ts = fso.OpenTextFile(WSH.Arguments(2), 2);
ts.WriteLine(descr_str);
ts.Close()