Not selecting value from drop down list

I have created a drop down list that displays values from mysql database.  The values are displayed but when a value is selected it no value is present.  Using html form.  Here is the drop down code:

echo "<select name=location value=''>Location</option>";
// printing the list box select command

while($nt=mysql_fetch_array($result)){//Array or records stored in $nt
echo "<option value=$nt[id]>$nt[location]</option>";
/* Option values are added by looping through the array */
}
echo "</select>";// Closing of list box


When I output Location in program that is called by form it is empty.