// JavaScript Document
if (!document.getElementById)
    document.getElementById = function() { return null; }

function initializeMenu(menuId, actuatorId) {
    var menu = document.getElementById(menuId);
    var actuator = document.getElementById(actuatorId);

    if (menu == null || actuator == null) return;

    actuator.onclick = function() {
        var display = menu.style.display;
        this.parentNode.style.backgroundImage =
            (display == "block") ? "url(../CMC_Image/plus.gif)" : "url(../CMC_Image/minus.gif)";
        menu.style.display = (display == "block") ? "none" : "block";

        return false;
    }
}


window.onload = function() {

initializeMenu("MenuIT", "HeadingExpand1");
initializeMenu("MenuCS", "HeadingExpand2");
initializeMenu("MenuTE", "HeadingExpand3");
initializeMenu("MenuCE", "HeadingExpand4");
initializeMenu("MenuAR", "HeadingExpand5");
initializeMenu("MenuST", "HeadingExpand6");

}