KoL auto-adventure script

kol.js

javascript:
var frm = window.frames[2];
function next(f) {
    setTimeout(f, 100);
}
function doClick(elem) {
    var evt = document.createEvent("MouseEvents");
    evt.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
    elem.dispatchEvent(evt);
}
function goTo(page, text, f) {
    console.log('Going to ' + page);
    frm.location.replace(page);
    waitFor(text, f);
}
function waitFor(text, f) {
    function loop() {
        try {
            if (frm.document.body.innerHTML.search(text) >= 0) {
                f(); return;
            }
        } catch(e) {
            console.log(e);
        }
        next(loop);
    }
    next(loop);
}
function fight() {
    goTo('http://www.kingdomofloathing.com/adventure.php?snarfblat=293', 'repeat.gif', function() {
        var bar = frm.document.getElementsByClassName('blueback')[0];
        var img = bar.childNodes[13].childNodes[0];
        var src = img.getAttribute('src');
        doClick(img);
        waitFor('advagain.gif', heal);
    });
}
function heal() {
    goTo('http://www.kingdomofloathing.com/campground.php?action=rest', 'Back to the Main Map', function() {
        next(fight);
    });
}
next(fight);
void 0;