// JavaScript Document

var first = 1;
var last = 6;
var current = 1;
var timePlay;

function autoPlay() {
	var object = document.getElementById('slide' + current);
	object.style.display = 'none';
	
	timePlay = setTimeout("autoPlay()",4000);
	
	if(current == last) {
		current = 1;
	}
	
	else {
		current++;
	}
	
	var object = document.getElementById('slide' + current);
	object.style.display = 'block';
}

function stopAutoPlay() {
	clearTimeout(timePlay);
}

function nextPicture() {
	var object = document.getElementById('slide' + current);
	object.style.display = 'none';
	
	if(current == last) {
		current = 1;
	}
	
	else {
		current++;
	}
	
	var object = document.getElementById('slide' + current);
	object.style.display = 'block';
}

function previousPicture() {
	var object = document.getElementById('slide' + current);
	object.style.display = 'none';
	
	if(current == first) {
		current = last;
	}
	
	else {
		current--;
	}
	
	var object = document.getElementById('slide' + current);
	object.style.display = 'block';
}