function ord (string) 
{
 var str = string + '',
        code = str.charCodeAt(0);    if (0xD800 <= code && code <= 0xDBFF) { 
		// High surrogate (could change last hex to 0xDB7F to treat high private surrogates as single characters)
        var hi = code;
        if (str.length === 1) {
            return code; // This is just a high surrogate with no following low surrogate, so we return its value;
            // we could also throw an error as it is not a complete character, but someone may want to know      
		  }
        var low = str.charCodeAt(1);
        return ((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;
    }
    if (0xDC00 <= code && code <= 0xDFFF) { // Low surrogate        return code; // This is just a low surrogate with no preceding high surrogate, so we return its value;
        // we could also throw an error as it is not a complete character, but someone may want to know
    }
    return code;
}

function chr (codePt) 
{
    if (codePt > 0xFFFF) 
	{ // Create a four-byte string (length 2) since this code point is high
        //   enough for the UTF-16 encoding (JavaScript internal use), to
        //   require representation with two surrogates (reserved non-characters
        //   used for building other characters; the first is "high" and the next "low")        codePt -= 0x10000;
        return String.fromCharCode(0xD800 + (codePt >> 10), 0xDC00 + (codePt & 0x3FF));
    }
    return String.fromCharCode(codePt);
}