function IEHoverPseudo() {

    var navItems = document.getElementById("primary-nav").getElementsByTagName("li");
    
    for ( var i=0; i<navItems.length; i++ ) {

        if( navItems[i].className == "menuparent") {
            navItems[i].onmouseover = function() { this.className += " over"; }
            navItems[i].onmouseout = function() { this.className = "menuparent"; }
        }
    }

}
window.onload = IEHoverPseudo;