// JavaScript Document
function randOrd(){
return (Math.round(Math.random())-0.5); }
var pictures = new Array ("images/01.jpg", "images/02.jpg", "images/03.jpg", "images/04.jpg", "images/05.jpg", "images/06.jpg", "images/07.jpg", "images/08.jpg", "images/09.jpg", "images/10.jpg", "images/11.jpg", "images/12.jpg", "images/13.jpg", "images/14.jpg", "images/15.jpg", "images/16.jpg", "images/17.jpg", "images/18.jpg", "images/19.jpg", "images/20.jpg");
pictures.sort(randOrd);
var picture_num = 1;
var current_picture = new Image();
function start_show() 
{
setInterval("slideshow()", 4000);
current_picture.src = pictures[0];
document["rotating_picture"].src = current_picture.src;
}

function slideshow() 
{
	picture_num++;
		if (picture_num == pictures.length) 
		{
		picture_num = 0;
		}
		current_picture.src = pictures[picture_num];
		document["rotating_picture"].src = current_picture.src;
}
function switchMenuOn() {
	var dm = document.getElementById("dropDown");
		dm.style.display = '';
}

function switchMenuOff() {
	var dm = document.getElementById("dropDown");
		dm.style.display = 'none';
}
function MenuOn(object, object2) {
	var dm = document.getElementById(object);
	var bg = document.getElementById(object2);
		dm.style.display = '';
		bg.style.display = '';
}
function menuOff() {
	var dm = document.getElementById('gallery');
	var bg = document.getElementById('bg');
		dm.style.display = 'none';
		bg.style.display = 'none';
}