JS function to tell amazon not to use items for recommendation

NoRecommend.js

/* Paste this in the JS console on the amazon "improve your recommendations" page.  
   It finds all the "don't use this item" checkboxes, and clicks them if they are not checked.
   Finally it waits a few seconds for the XHR to complete, then loads the next page.
   Of course this will all break when Amazon changes their page layout, but it shouldn't be too hard to fix.
   */
(function() {
    var cb = document.querySelectorAll('[type=checkbox]'); 
    for (var i = 0 ; i < cb.length ; i++) {
        if (cb[i].parentElement.parentElement.id.startsWith("cb_isExcluded")) {
            if (cb[i].checked === false) {
                console.log(i + ":" + cb[i].parentElement.parentElement.id );
                cb[i].click();
            } else {
                console.log(i + ":" + cb[i].parentElement.parentElement.id + ": skipped");
            }        	
        }
    }
    setTimeout((function() {
        var next = document.getElementById("iyrNext");
        if (next) next.click();
    }), 3000);
})()