function populate_location_selectlist()
{
	var type_id = 0;
	type_id = $('#type_id').val();
	var location_id = 0;
	location_id = $('#location_id').val();

	//display a progress bar
	$('#location_selector').html('<img src="images/progress_bar.gif" alt="Loading" border="0" vspace="3" />');
	
	$.post("search_location_ajax.php",
	  { 
			type_id: type_id, location_id: location_id
		}
		,
		function(data)
		{
			$('#location_selector').html(data);
	  }
	);
}