var aTimers   = new Array();
var timeOut	  = 500;			// Menu's verdwijnen na n milliseconden;

function showMenu(Id)
{
    var oMenu = document.getElementById('uitklapmenu' + Id);

    stopTimer(Id);

    if (oMenu){
        oMenu.style.display = '';
    }
}

function hideMenu(Id){
   var uitklapmenu = document.getElementById('uitklapmenu' + Id);

    if (uitklapmenu){
        uitklapmenu.style.display = 'none';
    }
}

function startTimer(Id){
    aTimers[Id] = setTimeout('hideMenu(' + Id + ')', timeOut);
}

function stopTimer(Id){
    if (aTimers[Id]){
        clearTimeout(aTimers[Id]);
        aTimers[Id] = null;
    }
}