var ua = navigator.userAgent.toLowerCase();
if (ua.indexOf('safari/') != -1){
    document.write("<link rel='stylesheet' href='/site/css/safari.css' />");
}

sfHover = function() {
    var sfEls = document.getElementById("main_navigation").getElementsByTagName("LI");
    for (var i=0; i<sfEls.length; i++) {
        sfEls[i].onmouseover=function() {
            this.className+=" sfhover";
        }
        sfEls[i].onmouseout=function() {
            this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
        }
    }
}

if (window.attachEvent) window.attachEvent("onload", sfHover);

gripHover = function() {
    $$('ul.nav_menu').each(function(menu) {
        var topNav = menu.parentNode;

        menu.onmouseover=function() {
            topNav.className = "expanded";
        }
        menu.onmouseout=function() {
            topNav.className = "";
        }
    });
}

Event.observe(window, 'load', gripHover);