// Update-Down Text Generator - Glitter-Graphics.com / Glig.com version

// Consensed form of bi-directional mapping, i.e. if you paste reversed text,
// the original text will come back. We also support capital letters, but not
// all of them will come out very well. Still cool though, right?
//
// If you're interested in learning more about unicode chars, this page may
// be a good start:
//
// http://ascii-table.com/unicode-chars.php?p=0

var reversal_map =
{
    'A': '\u2200',  'B': '\u10412',  'C': '\u2183',  'D': '\u25D6',  'E': '\u018E',
    'F': '\u2132',  'G': '\u2141',   'J': '\u017F',  'K': '\u22CA',  'L': '\u2142',
    'M': '\u019C',  'N': '\u1D0E',   'P': '\u0500',  'Q': '\u038C',  'R': '\u1D1A',
    'T': '\u22A5',  'U': '\u2229',   'V': '\u1D27',  'W': 'M',       'Y': '\u2144',

    'a': '\u0250',  'b': 'q',        'c': '\u0254',  'd': 'p',       'e': '\u01DD',
    'f': '\u025F',  'g': '\u0183',   'h': '\u0265',  'i': '\u0131',  'j': '\u027E',
    'k': '\u029E',  'l': '\u05DF',   'm': '\u026F',  'n': 'u',       'r': '\u0279',
    't': '\u0287',  'v': '\u028C',   'w': '\u028D',  'y': '\u028E',

    '.': '\u02D9',  '[': ']',        '(': ')',       '{': '}',       '?': '\u00BF',
    '!': '\u00A1',  '&': '\u214B',   '\'': ',',      '\"': ',,',     '<': '>',
    '_': '\u203E',  '\\': '\\',      ';': '\u061B',  '`': ',',       ',': '\'',

    '1': '\u21C2',  '2': '\u1105',   '3': '\u1110',  '4': '\u3123',  '5': '\u078E',
    '6': '9',       '7': '\u3125',   '9': '6'
};

var complete_map;

function reverse_text(text)
{
    if(!complete_map)
    {
        complete_map = { };
        for(var key in reversal_map)
        {
            var val = reversal_map[key];
            if(!reversal_map[val])
                complete_map[reversal_map[key]] = key;
            complete_map[key] = val;
        }
    }

    var str = "";

    for (var i = text.length - 1; i >= 0; --i)
    {
        var ch = text.charAt(i);
        var rev = complete_map[ch];
        if(rev)
            str += rev;
        else
            str += ch;
    }

    return str;
}

function on_reverse_text(text_id, target_id)
{
    var ob = document.getElementById(text_id);
    var target = document.getElementById(target_id);

    target.value = reverse_text(ob.value);
}