/**
*
*  UTF-8 data encode / decode
*  http://www.webtoolkit.info/
*
**/

function Utf8()
{
}

Utf8.encode = function (string)
{
    string = string.replace(/\r\n/g,"\n");
    var utftext = "";

    for (var n = 0; n < string.length; n++)
    {
        var c = string.charCodeAt(n);

        if (c < 128)
        {
            utftext += String.fromCharCode(c);
        }
        else if((c > 127) && (c < 2048))
        {
            utftext += String.fromCharCode((c >> 6) | 192);
            utftext += String.fromCharCode((c & 63) | 128);
        }
        else
        {
            utftext += String.fromCharCode((c >> 12) | 224);
            utftext += String.fromCharCode(((c >> 6) & 63) | 128);
            utftext += String.fromCharCode((c & 63) | 128);
        }
    }

    return utftext;
};

Utf8.decode = function (utftext)
{
    var string = "";
    var i = 0;
    var c = 0;
    var c2 = 0;
    var c3 = 0;

    while ( i < utftext.length )
    {
        c = utftext.charCodeAt(i);

        if (c < 128)
        {
            string += String.fromCharCode(c);
            i++;
        }
        else if((c > 191) && (c < 224))
        {
            c2 = utftext.charCodeAt(i+1);
            string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
            i += 2;
        }
        else
        {
            c2 = utftext.charCodeAt(i+1);
            c3 = utftext.charCodeAt(i+2);
            string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
        }
    }

    return string;
};