var t = new Array();
var x = new Array();

function hide(level) {
    if (t[level]) { clearTimeout(t[level]); t[level] = null };
    if (x[level]) x[level].style.display='none';
}

function show(id, level) {
    hide(level);
    x[level] = document.getElementById(id);
    if (x[level]) x[level].style.display='block';
}

function delayhide(level) {
//    alert("ici" + level);
    if (t[level]) clearTimeout(t[level]);
    t[level] = setTimeout("hide("+level+")", 500);
}