<SCRIPT type=text/javascript> 
 var $window = $(window);
 $('.content1').each(function(index) {
  var $self = $(this);
  var offsetCoords = $self.offset();
  $(window).scroll(function() {
   // If this section is in view
   if (($window.scrollTop() + $window.height()) > offsetCoords.top && ((offsetCoords.top + $self.height()) > $window.scrollTop())) {
    var yPos = -($window.scrollTop() / 8);
    if ($self.attr('id') != 'first') {
     yPos += 126;
    }
    var coords = '50%' + yPos + 'px';
    $self.css('backgroundPosition', coords);
    // Check for other sprites in this section
    $('.sprite1', $self).each(function(index) {
     var $sprite = $(this);
     var yPos = -($window.scrollTop() / $sprite.data('speed')) + $sprite.data('offsety');
     $sprite.css('left', yPos);
    });
   }
  });
 });
});
</SCRIPT> ​