/*
 * 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;

 //if (window.opera) return; 
 // I'm too tired

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

        
	
	return false;
    
	}


}