function openSlide(){
   var Height = 480;
   var Width = 640;
	var Top = (screen.height / 2) - (Height / 2);
	var Left = (screen.width / 2) - (Width / 2);
	var params = 'resizable=yes,scrollbars=yes,height=' + Height + ',width=' + Width + ',top=' + Top + ',left=' + Left;
   var wn = window.open(document.images.show.src.replace(/liblgimg/ig, 'librwimg'),'PhotoFull',params);
   wn.focus();
}