I have two dropdown menus, im having trouble with making the options for the second dropwdown to be dependent on the choice on the first dropdown menu. $city=""; $formcontent =<<<EOT <label>Assumed Bitten City : </label> <select name="AssumedBittenCity" id="AssumedBittenCity"> <option value="0">Make a Selection</option> <option value="Caloocan City">Caloocan City</option> <option value="Las Piñas City">Las Piñas City</option> <option value="Makati City">Makati City</option> <option value="Malabon City">Malabon City</option> <option value="Mandaluyong City">Mandaulyong City</option> ...