<form action="http://maps.google.com/maps" method="get" target="_blank">
<label for="saddr">Enter your location</label>
<input type="text" name="add1" />
<input type="hidden" name="add2" value="350 North Avenue New York, NY 10018" />
<input type="submit" value="Find Location" />
</form>
</body>
</html>