// JavaScript Document
function $() {
var elements = new Array();
for (var i = 0; i < arguments.length; i++) {
var element = arguments[i];
if (typeof element == 'string')
element = document.getElementById(element);
if (arguments.length == 1)
return element;
elements.push(element);
}
return elements;
}

function collapseAll(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objs[i].style.display = 'none';
}
}
function expandAll(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objs[i].style.display = '';
}
}
function collapseimg(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objs[i].src = "images/collapse.gif";
}
}
function expandimg(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objs[i].src = "images/expand.gif";
}
}
function show() {
expandAll($('exh1','exh2','con1','con2','con3','con4','con5','con6','con7','con8','explink'));//add exh and con ids here to collapse exhibits and concert
collapseimg($('img1','img2','img3','img4','img5','img6','img7','img8','img9','img10'));
}
function pageLoad() {
collapseAll($('exh1','exh2','con1','con2','con3','con4','con5','con6','con7','con8','explink')); //add exh and con ids here to collapse exhibits and concert
if (document.images) {
	expand = new Image
	collapse = new Image
	expand.src = "images/expand.gif"
	collapse.src = "images/collapse.gif"
    }
expandimg($('img1','img2','img3','img4','img5','img6','img7','img8','img9','img10'));	
}
addEvent(window,'load',pageLoad,show);



function switchMenu(obj, img) {
var el = document.getElementById(obj);
if ( el.style.display != 'none' ) {
el.style.display = 'none';
document.getElementById(img).src = "images/expand.gif";
}
else {
el.style.display = '';
document.getElementById(img).src = "images/collapse.gif";
}
}