function switchVisible(elId) {
    var elt = findElementByID(elId);
    if (elt.style.display == "none") elt.style.display = "";
    else elt.style.display = "none";
}
function setVisible(elId) {
    var elt = findElementByID(elId);
    elt.style.display = "";
    clearTimeout(elt["at_timeout"]);
}
function setColor(elId, color) {
    var elt = findElementByID(elId);
    elt.style.color = color;
}
function setHiddenWithTimeOut(elId, timeout) {
    var elt = findElementByID(elId);
    elt["at_timeout"] = setTimeout("findElementByID('" + elId + "').style.display = 'none';", timeout);
}
function setHidden(elId) {
    setHiddenWithTimeOut(elId, 0); 
}