var galeryPicIndex = 0;

function galeryPicLeft() {
	var new_index = galeryPicIndex - 1;
	if (new_index < 0)
		new_index = galeryPics.length - 1;
	updateGaleryPic(new_index);
}
function galeryPicRight() {
	var new_index = galeryPicIndex + 1;
	if (new_index >= galeryPics.length)
		new_index = 0;
	updateGaleryPic(new_index);
}
function updateGaleryPic(index) {
	if (galeryPicIndex != index) {
		galeryPicIndex = index;
		var t = galeryPics[index];
		document.getElementById('galeryPic').src = t.src;
		document.getElementById('galeryPic').title = t.title;
		var url = t.url;
		if (! url)
			url = location.href;
		document.getElementById('galeryPicLink').href = "javascript:window.open('http://preview.informance.at/popup/index.html?"+url+"','"+t.title+"','height=screen.height,width=screen.width,status=no,dependent=yes,resizable=yes').focus();";
	}
}