function showDropDown(dropdownID) {
    if (!dropdownID)
        var dropdownObj = document.getElementById("dropdownContainer");
    else 
        var dropdownObj = document.getElementById(dropdownID);
    if (dropdownObj.style.display == "none") {
        dropdownObj.style.display = "block";
    }
    else dropdownObj.style.display = "none";
}

function hideDropDown(dropdownID) {
    if (!dropdownID)
        var dropdownObj = document.getElementById("dropdownContainer");
    else 
        var dropdownObj = document.getElementById(dropdownID);
    if (dropdownObj.parentNode.tagName == "LI")
        dropdownObj.style.display = "none";
}
function displaySelectedItem(item, dropdownID) {
    if (item) {
        if (!dropdownID)
            var dropdownObj = document.getElementById("dropdownContainer");
        else 
            var dropdownObj = document.getElementById(dropdownID);
        if (dropdownObj.parentNode.tagName == "LI")
            dropdownObj.parentNode.getElementsByTagName("a")[0].innerHTML = item.innerHTML;
    }
}