var popups = {};

function popup(e, event, w, h) { 
	var target = 'popup';
	if (w==null) w = 550;
	if (h==null) h = 500;
	if (e.target) target = e.target;
	if (typeof popups[target] != 'object' || popups[target].closed) {
		var opt = "resizable=yes,scrollbars=yes,toolbar=yes,location=yes"+
			",width="+w+",height="+h;
		popups[target] = window.open(e.href, e.target, opt);
	} else {
		popups[target].location = e.href;
	}
	popups[target].focus();
	return false;
};