window.onload = function() { Navigation_UL_LI_Reset(); };

function Navigation_UL_LI_Reset()
{
    var liElements = document.getElementById('navigation').getElementsByTagName('li');
    for (var i = 0; i < liElements.length; i++)
    {
        liElements[i].className = (i == selectedIndex - 1) ? 'selected' : '';
        liElements[i].onmouseover = function() { Navigation_UL_LI_OnHover(this); }
        liElements[i].onmouseout = function() { Navigation_UL_LI_Reset(); }
        liElements[i].onclick = function() { Navigation_UL_LI_OnClick(this); }
    }
}

function Navigation_UL_LI_OnHover(e)
{
    Navigation_UL_LI_Reset();
    e.className = 'selected';
}

function Navigation_UL_LI_OnClick(e)
{
    var aElements = e.getElementsByTagName('a');
    window.location.href = aElements[0].href;
}