function popup(fileName, picWidth, picHeight)
{
	var w = 550;
	var h = 550;
	var winl = (screen.width - w) / 2;	// Math.floor(screen.width/2)
	var wint = (screen.height - h) / 2;	 //Math.floor(screen.height/2)
	window.open("popup.php?fileName="+fileName+"&picWidth="+picWidth+"&picHeight="+picHeight, "View_Large_Image", "height="+h+",width="+w+",status=yes,toolbar=no,menubar=yes,location=no,resizable=yes,scrollbars=yes,top="+wint+",left="+winl );
}