function openWindow(dest,aw,ah,target) { 
	if (!aw) aw = 640;
	if (!ah) ah = 510;
	if (!target) target='infowindow'
	Win = window.open(dest,target,'width=' + aw + ',height=' + ah + ',resizable=1,scrollbars=yes,menubar=no,status=no,toolbar=no,location=no,directories=no' );
	Win.focus();
	return void(0);
}