function initPage()
{
    var n = document.getElementById("nav-bar");
    if (n)
    {
        var lis = n.getElementsByTagName("li");
        for (var i = 0; i < lis.length; i++)
        {
            lis[i].onmouseover = function()
            {
                this.className += " hover";
            }
            lis[i].onmouseout = function()
            {
                this.className = this.className.replace(" hover", "");
            }
        }
    }
}

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