Since you haven't indicated that you are receiving any error messages, I would have to think that the query is suspect. In that situation I would usually do a check to see if the array is getting populated with any values, like so:
$row = mysql_fetch_array ($result, MYSQL_ASSOC);
print_r($row);
Also, you might try something like this with your echo statement, it's worth a try anyway:
echo "<P><B>".$fn." ". $ln.",". $t."</B><BR /> ";