$(document).ready(function(){

  
  $('.readers').mousemove(function(e) {
    x = e.pageX - $(this).offset().left;
    
    px_per_reader = 120 / $(this).children().length;
    reader_number = Math.floor(x / px_per_reader);

    $(this).children().hide();
    $(this).children().eq(reader_number).show();
  });
  
  $('.books').mouseout(function(e) {
    clearTimeout(fadeTimeout);
    fadeTimeout = setTimeout(fadeInBooks, 300);
  });
  
  $('.books > li').mouseover(function(e) {
    clearTimeout(fadeTimeout);
    $('.books > li').css({ opacity: 0.2 });
    $(this).css({ opacity: 1.0 });
  });
  
  $(window).scroll(function(){ 	
 	if($('body').scrollTop() > 90) 
 	{
 		$('#logo').addClass('fixed');
 		$('#description').addClass('logo_spacer');
 	}
 	else
 	{
 		$('#logo').removeClass('fixed');
 		$('#description').removeClass('logo_spacer');
 	}
   });

});

function fadeInBooks()
{
  $('.books > li').animate({ opacity: 1.0 }, 400);
}

var fadeTimeout;