function openPW(href, title, width, height) {
	var x = (screen.availWidth - width)/2;
	var y = (screen.availHeight - height)/2;
	var w = window.open(href, title, "width=" + width + ",height=" + height + ",top=" + y + ",left=" + x);
	w.focus();
}

function openPWResize(href, title, width, height) {
	var x = (screen.availWidth - width)/2;
	var y = (screen.availHeight - height)/2;
	var w = window.open(href, title, "width=" + width + ",height=" + height + ",top=" + y + ",left=" + x + ",scrollbars=yes,resizable=yes");
	w.focus();
}

function closePW() { self.close(); }