/* =============================================================
 * Mirontaine html menu management.
 * =============================================================
 *
 * @author Laurent Bedubourg <lbedubourg@motion-twin.com>
 */

/**
 * @type object 
 * Current activated menu
 */
currentMenu = null;
  
/**
 * Open hidden menu.
 *
 * @param id int
 *        id of the menu to activate.
 */
function setVisible(id) {
    hiddeCurrent();
    element = document.getElementById(id);
    element.style.visibility = 'visible';
    currentMenu = element;
}

/**
 * Hidde current menu.
 */
function hiddeCurrent() {
    if (currentMenu != null) {
        currentMenu.style.visibility = 'hidden';
        currentMenu = null;
    }
}