// UrlDecode 
function UrlDecode(str) {
    var ret = "";
    for (var i = 0; i < str.length; i++) {
        var chr = str.charAt(i);
        if (chr == "+") {
            ret += " ";
        } else if (chr == "%") {
            var asc = str.substring(i + 1, i + 3);
            if (parseInt("0x" + asc) > 0x7f) {
                ret += asc2str(parseInt("0x" + asc + str.substring(i + 4, i + 6)));
                i += 5;
            } else {
                ret += asc2str(parseInt("0x" + asc));
                i += 2;
            }
        } else {
            ret += chr;
        }
    }
    return ret;
}

/** 
* Url编码 
**/
function urlencode (unzipStr) {
    var zipstr = "";
    var strSpecial = "!\"#$%&'()*+,/:;<=>?[]^`{|}~%";
    var tt = "";
    for (var i = 0; i < unzipStr.length; i++) {
        var chr = unzipStr.charAt(i);
        var c = StringToAscii(chr);
        tt += chr + ":" + c + "n";
        if (parseInt("0x" + c) > 0x7f) {
            zipstr += encodeURI(unzipStr.substr(i, 1));
        } else {
            if (chr == " ")
                zipstr += "+";
            else if (strSpecial.indexOf(chr) != -1)
                zipstr += "%" + c.toString(16);
            else
                zipstr += chr;
        }
    }
    return zipstr;
}

/** 
* Url解码 
**/
function urldecode (zipStr) {
    var uzipStr = "";
    for (var i = 0; i < zipStr.length; i++) {
        var chr = zipStr.charAt(i);
        if (chr == "+") {
            uzipStr += " ";
        } else if (chr == "%") {
            var asc = zipStr.substring(i + 1, i + 3);
            if (parseInt("0x" + asc) > 0x7f) {
                uzipStr += decodeURI("%" + asc.toString() + zipStr.substring(i + 3, i + 9).toString());
                ;
                i += 8;
            } else {
                uzipStr += AsciiToString(parseInt("0x" + asc));
                i += 2;
            }
        } else {
            uzipStr += chr;
        }
    }
    return uzipStr;
}

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