if(document.images) {
pics = new Array();
pics[0] = new Image();
pics[0].src = "img/vg-big.jpg";
pics[1] = new Image();
pics[1].src = "img/vg-big-over.jpg";
pics[2] = new Image();
pics[2].src = "img/arrow-right.jpg";
pics[3] = new Image();
pics[3].src = "img/arrow-right-over.jpg";
pics[4] = new Image();
pics[4].src = "img/arrow-left.jpg";
pics[5] = new Image();
pics[5].src = "img/arrow-left-over.jpg";
}

function changer(from,to) {
if(document.images) {
document.images[from].src = pics[to].src;
}
}

var currentpage = 1;
var maxpage = 7;
function clearall()
{							
	for(var i=1;i<=maxpage;i++)
	document.getElementById("projects" + i).style.display = "none";
}
function previous()
{
	var nextpage = -1;
	if(currentpage == 1)
	nextpage = maxpage;
	else nextpage = currentpage -1;
	clearall();
	
	document.getElementById("projects" + nextpage).style.display = "";
	currentpage = nextpage;
}
function next()
{
	var nextpage = -1;
	if(currentpage == maxpage)
	nextpage = 1;
	else nextpage = currentpage +1;
	clearall();
	
	document.getElementById("projects" + nextpage).style.display = "";
	currentpage = nextpage;
}

var timer = 0;

function slide()
{
	timer = window.setInterval('next();',4000)
}

function clearslide()
{
	window.clearInterval(timer);
}