Doki Clannad Decoder Script

/*
 *  Decoder Script
 *  By: BlazePh
 */

// Get original phrase
var original = document.body.innerHTML;
original = original.replace("<pre>", "");
original = original.replace("</pre>", "");
var final = "";

// Split into lines
original = original.split(/\r\n|\r|\n/);

for (var i = 0; i < original.length; i++)
{
    var line = original[i];

    // Ignore blank lines
    if (line != null && line != "")
    {
        // Insert newline
        if (i != 0)
            final += "<br />";

        // Split line into words
        line = line.split(" ");

        var j, reverse;

        // If line begins with a quote, it's normal
        if (line[0].charAt(0) == '"')
        {
            reverse = false;
            j = 0;
        }
        // Otherwise, it's in reverse
        else
        {
            reverse = true;
            j = line.length - 1;
        }

        while (j >= 0 && j < line.length)
        {
            var word = line[j];

            // Ignore "blank" words
            if (word != null && word != "")
            {
                // Insert space
                if ((reverse && j != (line.length - 1)) || (!reverse && j != 0))
                    final += " ";

                // Check for quotes and commas
                var quoteBegin = (word.indexOf("\"") == 0);
                var quoteEnd = (word.indexOf("\"") == (word.length - 1));
                var comma = (word.indexOf(",") != -1);

                // Insert begin quote if necessary
                if (quoteBegin)
                {
                    word = word.substr(1);
                    final += "\"";
                }

                if (quoteEnd || comma)
                    word = word.substr(0, (word.length - 1));

                // Split word into letters
                word = word.split("/");

                // Convert each character code into its corresponding
                // letter and insert it
                for (var k = 0; k < word.length; k++)
                {
                    var letterCode = new Number(word[k]);
                    final += String.fromCharCode(91 - letterCode);
                }

                // Insert end quote if necessary
                if (quoteEnd)
                    final += "\"";

                // Insert comma if necessary
                if (comma)
                    final += ",";
            }

            if (reverse)
                j--;
            else
                j++;
        }
    }
}

document.body.innerHTML += final;