function wpbuzzer_popup(url) {
        var w = 500, h = 250;

        var left = (screen.width/2)-(w/2);
        var top = (screen.height/2)-(h/2);

	newwindow=window.open(url,'wpbuzzer_popup','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
	if (window.focus) {newwindow.focus()}
	return false;
}