// decrypt helper function
function decryptCharcode(n, start, end, offset)
{
	n = n + offset;
	if (offset > 0 && n > end)
		n = start + (n - end - 1);
	else if (offset < 0 && n < start)
		n = end - (start - n - 1);
	return String.fromCharCode(n);
}

// decrypt string
function decryptString(enc, offset)
{
	var dec = "";
	var len = enc.length;
	for(var i = 0; i < len; i++)
	{
		var n = enc.charCodeAt(i);
		if (n >= 0x2B && n <= 0x3A)
			dec += decryptCharcode(n,0x2B,0x3A,offset);	// 0-9 . , - + / :
		else if (n >= 0x40 && n <= 0x5A)
			dec += decryptCharcode(n,0x40,0x5A,offset);	// A-Z @
		else if (n >= 0x61 && n <= 0x7A)
			dec += decryptCharcode(n,0x61,0x7A,offset);	// a-z
		else
			dec += enc.charAt(i);
	}
	return dec;
}

// decrypt spam-protected emails
function linkTo_UnCryptMailto(s)
{
	location.href = decryptString(s,-1);
}