$(document).ready(function() {

 // hides all photos

  $('.africa,.asia,.australasia,.europe,.northAmerica,.southAmerica,.photosBoxTopInner').hide();
  
  
// shows the photosBox div on clicking the selected link 

  $('a#navAfrica').click(function() {
	
    $('.africa,.photosBoxTopInner').slideDown('slow');
	
	$('.asia,.australasia,.europe,.northAmerica,.southAmerica').slideUp('slow');
	
    return false;
	
  });
  
// shows the photosBox div on clicking the selected link 

  $('a#navAsia').click(function() {
	
    $('.asia,.photosBoxTopInner').slideDown('slow');
	
	$('.africa,.australasia,.europe,.northAmerica,.southAmerica').slideUp('slow');
	
    return false;
	
  });
  
// shows the photosBox div on clicking the selected link 

  $('a#navAustralasia').click(function() {
	
    $('.australasia,.photosBoxTopInner').slideDown('slow');
	
	$('.africa,.asia,.europe,.northAmerica,.southAmerica').slideUp('slow');
	
    return false;
	
  });
  
// shows the photosBox div on clicking the selected link 

  $('a#navEurope').click(function() {
	
    $('.europe,.photosBoxTopInner').slideDown('slow');
	
	$('.africa,.asia,.australasia,.northAmerica,.southAmerica').slideUp('slow');
	
    return false;
	
  });
  
// shows the photosBox div on clicking the selected link 

  $('a#navNorthAmerica').click(function() {
	
    $('.northAmerica,.photosBoxTopInner').slideDown('slow');
	
	$('.africa,.asia,.australasia,.europe,.southAmerica').slideUp('slow');
	
    return false;
	
  });
  
// shows the photosBox div on clicking the selected link 

  $('a#navSouthAmerica').click(function() {
	
    $('.southAmerica,.photosBoxTopInner').slideDown('slow');
	
	$('.africa,.asia,.australasia,.europe,.northAmerica').slideUp('slow');
	
    return false;
	
  });

});