depacker

depack.js

function depack(p) {
    if (p != "") {
        c = unescape(p);
        var _e = eval,
            s = "eval=function(v){c=v;};" + c + ";eval=_e;";
        eval(s)
    } else {
        c = p
    };
    return c
}

function unpack(arg) {
    var c = arg;
    var a = 5,
        x = 1;
    while (x < a) {
        c = unescape(c);
        if (/eval\(+function\(/.test(c)) {
            c = depack(c);
            x++
        } else {
            break
        }
    };
    c = unescape(c);
    return c;
}