/*
 * menuExpandable2.js - implements an expandable menu based on a HTML list
 * Author: Dave Lindquist (http://www.gazingus.org)
 * modified extensively by primainfo August 2005 */

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.onmouseover = function() {
	var mMemb = document.getElementById("membershipMenu");
	mMemb.style.display = "none";
	var mEdu = document.getElementById("educationMenu");
	mEdu.style.display = "none";
	var mConf = document.getElementById("conferencesMenu");
	mConf.style.display = "none";
	var mPub = document.getElementById("publicationsMenu");
	mPub.style.display = "none";
	var mPress = document.getElementById("pressMenu");
	mPress.style.display = "none";
	var mAbout = document.getElementById("aboutMenu");
	mAbout.style.display = "none";

	var display = menu.style.display;
	//none:none = onmouseover submenus do not appear
	//inline:none = onmouseover submenus do not appear
	//none:inline = onmouseover submenus appear
  	   menu.style.display = (display == "inline") ? "none" : "none";
		//menu.style.display = "none";
	}



    actuator.onclick = function() {
	var display = menu.style.display;
	
	//none:inline = menu appears when clicked, disappears when clicked again
	//inline:inline = menu appears and stays when clicked again
  	 menu.style.display = (display == "inline") ? "none" : "inline";
	 //block = away from the line of the menu
	  //menu.style.display = (display == "block") ? "none" : "block";
        return false;
    }

}