// http://en.wikipedia.org/wiki/UTF-8

function stringToByteArray(a,b,c,d,e,f){
    for(
        b = [
            e = 
            f = 
            d = 0
        ]                                       // initialise variables
        ;
        c = a.charCodeAt(d++)                   // get the character code from the string
        ;
    ){
        c < 128                                 // under 128 is UTF-8 (ASCII range), 1 byte
            ?
            b[e] = c                            // add to byte array
            :
            c < 2048                            // under 2048 2bytes
                ?
                (
                    b[e] = 192 + (c >> 6),      // shift down 6bits, add 192 to put it in the right range
                    f = 1                       // number of bytes left to process
                )
                :
                c < 2^16                        // under 65536 is 3bytes
                    ?
                    (
                        b[e] = 224 + (c >> 12), // shift down 12bits and put it into the correct range
                        f = 2                   // number of bytes left to process
                    )
                    :
                    c < 2^21 && (               // finally, under 2097152 is 4bytes
                        b[e] = 240 + (c >> 18), // shift down 18bits and 240 so its in the right range
                        f = 3                   // 3bytes left to process
                    );

        for(                                    // process the remaining bytes indicated by `f`
            e++                                 // move onto the next slot in the byte array
            ;
            f--                                 // -1 and check if greater than 0 still
            ;
        )
            b[e++] = 128 + (c >> f*6 & 63)      // shift f * 6 bits, mask 1byte and add 128
    }
    return b                                    // return the byte array
}