var newWindow;
function openwindow(url, w, h) {
	if (!newWindow || newWindow.closed) {		
		newWindow = window.open(url, 'infoWindow' ,'resizable=no,width=' + w + ' ,height=' + h +',toolbar=no,scrollbars=no,status=no,menubar=no');
		newWindow.moveTo(20,20)
	} else {		
		newWindow.close();
		openwindow(url, w, h);
	}	
}