function imgPopup(img){

	s = document.title;

	hw = 		644;
	hg = 		490;
	
	if (screen) {        	
	   	x = (screen.availWidth - hw)*0.5;
		y = (screen.availHeight - hg)*0.4;
    	}else {
		x = (800-hw)/2;
		y = (600-hg)/3;
	}

	var aref = "";
	aref +=	"width="+hw;
	aref +=	",height="+hg;
	aref +=	",screenX="+x;
	aref +=	",screenY="+y;
	aref +=	",top="+y;
	aref +=	",left="+x;

	aref +=	",scrollbars=0";
	aref +=	",resizable=0";
	aref +=	",copyhistory=0";
	aref +=	",directories=0";
	aref +=	",location=0";
	aref +=	",menubar=0";
	aref +=	",status=0";
	aref +=	",toolbar=0"

	var w = window.open("show.asp?Img="+img+"&Title="+s,"photo",aref)
	w.focus();
}