function photo_popup(photoID, winWidth, winHeight) {

	if (!photoID>0) return false;
	if (!winWidth>0) winWidth = 100;
	if (!winHeight>0) winHeight = 100;

	var winURL = "http://alumni.blacksburghighschool.com/photo.php?id="+photoID;
	var useModal = true;

	if (window.showModalDialog && useModal) { // IE5+
		var winArguments = new Object();
		winArguments.winName = "popupWindow";
		winFeatures = "dialogHeight:" +winHeight+ "px; dialogWidth:" +winWidth+ "px; resizable:yes; status:no; help:no; scroll:no;";
		window.showModalDialog(winURL, winArguments, winFeatures);
	}
	else {
		var winName = "popupWindow";
		var winFeatures = "height=" +winHeight+ ",width=" +winWidth+ ",directories=0,location=0,menubar=0,resizable=1,status=0,,scrollbars=0,titlebar=0,toolbar=0"; 
		if (useModal) winFeatures += ",modal=yes,dependent=yes,dialog=yes";

		var remote = open(winURL, winName, winFeatures);
		if (remote) remote.focus();
	}

	return false;
}