function windowPop(tgt, w, h)
{	
	t = (screen.availHeight - h) / 2;
	l = (screen.availWidth - w) / 2;

	o = 'scrollbars=0, status=0, menu=0, top='+t+', left='+l+', height='+h+', width='+w;

	window.open('http://www.bialowieza.com.pl/fotoPop.php?tgt='+tgt, '', o);
}