function showSub(id) {
    var obj = document.getElementById("det" + id);
    obj.style.visibility = "visible";
}

function hideSub(id) {
    var obj = document.getElementById("det" + id);
    obj.style.visibility = "hidden";
}

function startTimeout(id) {
    eval("t" + id + " = setTimeout('hideSub(" + id + ");'," + timeout + ");");
}

function stopTimeout(id) {
    eval("clearTimeout(t" + id + ");");
}