function decodeutf8(utftext) {
    var string = "";
    var i = 0;
    var c = c1 = c2 = 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;
}