function popupWindow(thePIC) {
var w = 480, h = 340;

if (document.all) {
   /* the following is only available after onLoad */
   w = document.body.clientWidth;
   h = document.body.clientHeight;
}
else if (document.layers) {
   w = window.innerWidth;
   h = window.innerHeight;
}

var popW = 40, popH = 40;

var leftPos = (w-popW)/2, topPos = (h-popH)/2;

	//alert( features);
	var theURL = "photoPop.php?image_name=" + thePIC;
	//var theURL ="images/gallery/"+thePIC;
	var winName = "photo";
	var features = "width=" + popW + ",height="+popH+",top="+topPos+",left="+leftPos;
	//var features = "width=40 ,height=40,screenX=100,screenY=100,left=100,top=100";
	window.open(theURL,winName,features);
}