function decode64(input) {

    var keyStr = "ABCDEFGHIJKLMNOP" +
               "QRSTUVWXYZabcdef" +
               "ghijklmnopqrstuv" +
               "wxyz0123456789+/" +
               "="; 
               
    var output = "";
    var chr1, chr2, chr3 = "";
    var enc1, enc2, enc3, enc4 = "";
    var i = 0;

    // remove all characters that are not A-Z, a-z, 0-9, +, /, or = 
    var base64test = /[^A-Za-z0-9\+\/\=]/g;
    if (base64test.exec(input)) {
        alert("There were invalid base64 characters in the input text.\n" +
              "Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +
              "Expect errors in decoding.");
    }
    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    do {
        enc1 = keyStr.indexOf(input.charAt(i++));
        enc2 = keyStr.indexOf(input.charAt(i++));
        enc3 = keyStr.indexOf(input.charAt(i++));
        enc4 = keyStr.indexOf(input.charAt(i++));

        chr1 = (enc1 << 2) | (enc2 >> 4);
        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
        chr3 = ((enc3 & 3) << 6) | enc4;

        output = output + String.fromCharCode(chr1);

        if (enc3 != 64) {
            output = output + String.fromCharCode(chr2);
        }
        if (enc4 != 64) {
            output = output + String.fromCharCode(chr3);
        }

        chr1 = chr2 = chr3 = "";
        enc1 = enc2 = enc3 = enc4 = "";

    } while (i < input.length);

    output = output.replace(/&euro;/g, "€");
    return unescape(output);
} 



// for single variables
for (var xname in form) {
    var elem = document.getElementsByName(xname);

    for (i = 0; i < elem.length; i++) {
        var subelem = elem[i];
        if ((subelem.tagName == "INPUT") && ((subelem.type == "text") || (subelem.type == "hidden"))) subelem.value = decode64(form[xname]);
        else if ((subelem.tagName == "INPUT") && (subelem.type == "checkbox") && (subelem.value == decode64(form[xname]))) subelem.checked = "checked";
        else if ((subelem.tagName == "INPUT") && (subelem.type == "radio") && (subelem.value == decode64(form[xname]))) subelem.checked = "checked";
        else if (subelem.tagName == "TEXTAREA") subelem.value = decode64(form[xname]);
        else if (subelem.tagName == "SELECT") {

            for (j = 0; j < subelem.options.length; j++)
                if (subelem.options[j].value == decode64(form[xname])) subelem.options[j].selected = "selected";
        }
    }
}


// for arrays
for (var xname in formar) {
    for (var xxname in formar[xname]) {
        var elem = document.getElementsByName(xname + "[]");
        for (i = 0; i < elem.length; i++) {
            var subelem = elem[i];
            if ((subelem.tagName == "INPUT") && (subelem.type == "checkbox") && (subelem.value == decode64(formar[xname][xxname]))) subelem.checked = "checked";
            else if (subelem.tagName == "SELECT") {
                for (j = 0; j < subelem.options.length; j++)
                    if (subelem.options[j].value == decode64(formar[xname][xxname])) subelem.options[j].selected = "selected";
            }
        }
    }
}