function popup(mylink, windowname,width,height)
{
if (! window.focus)return true;
var href;
if (typeof(mylink) == 'string')
   href=mylink;
else
   href=mylink.href;
window.open(href, windowname, "width="+width+",height="+height+",toolbar=no,directories=no,menubar=no,status=no,location=no,scrollbars=no,resizeable=0");

return false;
}
function start_slideshow(start_frame, end_frame, delay) {
	setTimeout(switch_slides(start_frame,start_frame,end_frame, delay), delay);
}
												
function switch_slides(frame, start_frame, end_frame, delay) {
	return (function() {
	Effect.Fade('slideshow' + frame);
	if (frame == end_frame) { frame = start_frame; } else { frame = frame + 1; }
	setTimeout("Effect.Appear('slideshow" + frame + "');", 500);
	setTimeout(switch_slides(frame, start_frame, end_frame, delay), delay + 600);
	})
}