function startmenu()
{
        document.getElementById('details').style.display = "none";
}

function menufunc(menuId)
{
        if(document.getElementById(menuId).style.display == "none")
        {
                document.getElementById(menuId).style.display = "block";
        }
        else if(document.getElementById(menuId).style.display == "block")
        {
               document.getElementById(menuId).style.display = "none"; 
        }
}