Here is a simple yet powerful code to create a form where the user can enter his location to get directions to a specific place. Very useful for contact pages.

google map

<form action="http://maps.google.com/maps" method="get" target="_blank">
   <label for="saddr">Enter your location</label>
   <input type="text" name="saddr" />
   <input type="hidden" name="daddr" value="350 5th Ave New York, NY 10018 (Empire State Building)" />
   <input type="submit" value="Get directions" />
</form>