var sendMessage = chrome.runtime.sendMessage;
sendMessage({
    aim: "promoteButter",
    butter: {
        url: location.href,
        ref: document.referrer
    }
});

window.addEventListener("beforeunload", e => {
    sendMessage({
        aim: "switchToOil",
        oil: {
            url: location.href,
            ref: document.referrer
        }
    });
});

var aeh = function () {
    sendMessage({aim: "alive"})
}, ae = function (e) {
    document.addEventListener(e, aeh);
};
['click', 'maouseover', 'mouseout', 'focus', 'keydown'].forEach(function (e) {
    ae(e);
});

var dba = document.addEventListener,
    pl = function (e) {
        if ("undefined" === typeof e || e === null) {
            return null;
        }
        if (e.href) {
            return e.href;
        } else {
            return pl(e.parentNode || e.parentElement);
        }
    },
    h2 = function (e) {
        var h = pl(e.target);
        if (h) {
            sendMessage({ahref: h})
        }
    },
    h3 = function (e) {
        var h = pl(e.target);
        if (h) {
            sendMessage({href: h})
        }
    };
['contextmenu', 'auxclick'].forEach(function (e) {
    dba(e, h2)
});
['click'].forEach(function (e) {
    dba(e, h3)
});