// JavaScript Document
function sg_go(dir)
{
	i = 0;
	sgt = document.getElementById("sg_thumbs");
	sgtimgs = sgt.getElementsByTagName("IMG")
	L = sgtimgs.length;
	
	for (i = 0; (i < L) && (sgtimgs[i].className == "sg_nsel"); i++);
	
	sgtimgs[i].className = "sg_nsel";
	i = i + dir;
	if (i < 0) i = 0;
	if (i >= L) i = L-1;
	sgtimgs[i].className = "sg_selected";
	sg_view(sgtimgs[i].src);
	document.getElementById("sg_descr").innerHTML = sgtimgs[i].alt;
}

function sg_select(obj)
{
	sgt = document.getElementById("sg_thumbs");
	sgtimgs = sgt.getElementsByTagName("IMG")
	L = sgtimgs.length;
	
	for (i = 0; i < L; i++)
		sgtimgs[i].className = "sg_nsel";

	obj.className = "sg_selected";
	sg_view(obj.src);
	document.getElementById("sg_descr").innerHTML = obj.alt;
}

function sg_view(src)
{
	a = src.split("th_");
	s = a[0] + a[1];
	document.getElementById("sg_imgview").src = s;
}