// JavaScript Document
function displayMenu(elm)
{
    if(elm.getElementsByTagName('ul')[0])
    {
        elm.getElementsByTagName('ul')[0].style.display='block';
    }
}

function hideMenu(elm)
{
    if(elm.getElementsByTagName('ul')[0])
    {
        elm.getElementsByTagName('ul')[0].style.display='none';
    }
}


window.onload = function()
{
    var menu = document.getElementById('menu');
    var elms = menu.getElementsByTagName('li');
    for(i=0;i<elms.length;i++)
    {
        if( elms[i].parentNode.parentNode.id == 'menu' )
        {
            elms[i].onmouseover = function(){displayMenu(this)};
            elms[i].onmouseout = function(){hideMenu(this)};
        }
    }
}