function ShiftImage(img)
{
	var s = document.getElementById(img);
	var n = document.getElementById(img + "Nav");
	if (s.src.substr(s.src.length-5, 1) == "1")
	{
		s.src="../images/work/"+img+"2.jpg";
		n.src="../images/work/imgnav2.gif";
	}
	else if (s.src.substr(s.src.length-5, 1) == "2")
	{
		s.src="../images/work/"+img+"3.jpg";
		n.src="../images/work/imgnav3.gif";
	}
	else
	{
		s.src="../images/work/"+img+"1.jpg";
		n.src="../images/work/imgnav1.gif";
	}
}

function wopen(url, name, w, h)
{
	// Fudge factors for window decoration space.
	// In my tests these work well on all platforms & browsers.
	w += 32;
	h += 96;
	var win = window.open(url, name, 'width=' + w + ', height=' + h + ', ' + 'location=no, menubar=no, ' + 'status=no, toolbar=no, scrollbars=no, resizable=no');
	win.resizeTo(w, h);
	win.focus();
}