(function Merobe() {
    // let's go old school!
    var logo = document.getElementsByTagName("p")[0];
    var people = document.getElementsByTagName("a");
    for (var i=0, l=people.length; i<l; i++) {
        var person = people[i];
        if (person.className == "david") {
            person.onmouseover = function() {
                logo.style.backgroundPosition = "0 -180px";
            }
        } else if (person.className == "mike") {
            person.onmouseover = function() {
                logo.style.backgroundPosition = "0 -360px";
            }
        }
        person.onmouseout = function() {
            logo.style.backgroundPosition = "0 0";
        }
    }
})();