/*
 * menuExpandable3.js - implements an expandable menu based on a HTML list
 * Author: Dave Lindquist (http://www.gazingus.org)
 */

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;
        menu.style.display = (display == "block") ? "none" : "block";

        return false;
    }
}

window.onload = function() {					
            initializeMenu("conceptsMenu", "concepts");
			initializeMenu("ecosystemsMenu", "ecosystems");
			initializeMenu("ecosystemsAdvMenu", "ecosystemsAdv");			
			initializeMenu("livingSysMenu", "livingSys");
			initializeMenu("livingSysAdvMenu", "livingSysAdv");
			initializeMenu("humanBioMenu", "humanBio");
			initializeMenu("humanBioAdvMenu", "humanBioAdv");
			initializeMenu("resCentreMenu", "resCentre");									
}