Software that will automatically pull URLs with different IDs?

Question

JavaScript

There is an archive site

Login: ivan1980 (same password)

Through the console I find the image I need, there is also a code that will automatically display the ID for me.

!function () {
    var id = '[id$=seadragonContainer] div div';
    var bt = '[id$=ForwardBtn]';
    var pages = {};
    var o = document.querySelector(id);

    !function _observe(undefined) {
        var ob = new MutationObserver(function() {
            var imgs = $(id+' img[src*=Pages]:first');
            if (imgs && imgs[0]) {
                var page = imgs[0].src.match(/id=([^&]+)/)[1];
                if (pages[page] == undefined) {
                    pages[page] = true;

                    ob.disconnect();

                    var next = $(bt);
                    if (next && next[0]) {
                        _observe();
                        next[0].click();
                    } else {
                        console.clear();
                        console.log("dxo.itemsValue=['" + Object.keys(pages).join("','")+"'];");
                    }
                }
            }
        });

        ob.observe(o, { childList: true, attributes: true, subtree: true });
    }();

    o.setAttribute('start', true);
}();

But, further, I need in the link (for example, in this one):

109.233.224.234:81/Pages/ImageFile.ashx?level=9&x=...

Change level=13 and titleOverlap=4048 and id=(substitute the result from the console).
The goal is to achieve automation. Is it possible to?
The idea is taken from here , but, unfortunately, does not work. Does not save images. What is the problem of not understanding.