window.onload=montre;
window.onunload=cleanup;

function montre(id)
        {var d = document.getElementById(id);
        for (var i = 1; i<=10; i++)
                {if (document.getElementById('smenu'+i)) {document.getElementById('smenu'+i).style.display='none';}}
        if (d) {d.style.display='block';}
        }
function cleanup(id)
        {var d = document.getElementById(id);
        for (var i = 1; i<=10; i++)
                {document.getElementById('smenu'+i).style.display='none';}
        if (d) {d.style.display='block';}
        }