how to get a value from an option select?

how to get a value from an option select?

get value of an option select from my website here:  website

When selecting a town from the top left drop down. nothing is being alerted?!
  2. $('.townslist select').change(function() {
  3. alert("Selected");
  4. var town = $(this).val();
  5.   alert( "Selected " + town );
  6. });