function IEHoverPseudoHorizontalMain() {
    var navItems = document.getElementById("main-nav").getElementsByTagName("li");
    for (var i=0; i<navItems.length; i++) {
        if(navItems[i].className == "menubar") {
            navItems[i].onmouseover=function() { this.className += " over"; hideSel();}
            navItems[i].onmouseout=function() { this.className = "menubar"; showSel();}
            navItems[i].style.zIndex=9;
        }
    }
}

window.onload = IEHoverPseudoHorizontalMain;