$(document).ready(function(){
	
	$.preLoadImages("_img/languages/en_b.jpg", "_img/languages/du_b.jpg", "_img/languages/es_b.jpg");
	
	book();
	$('#book').css("background-color","black");
	$('#book').hide();
	$('#book').fadeIn(2000);
	
	$(window).resize(function() {
		book();
	});
	
	$('#en').mouseover(function(){
		$('#en').attr('src','_img/languages/en_b.jpg');
	});
	$('#en').mouseout(function(){
		$('#en').attr('src','_img/languages/en.jpg');
	});
	
	$('#du').mouseover(function(){
		$('#du').attr('src','_img/languages/du_b.jpg');
	});
	$('#du').mouseout(function(){
		$('#du').attr('src','_img/languages/du.jpg');
	});
	
	$('#es').mouseover(function(){
		$('#es').attr('src','_img/languages/es_b.jpg');
	});
	$('#es').mouseout(function(){
		$('#es').attr('src','_img/languages/es.jpg');
	});
	
});

function book() {
	var w = ($(document).width()-700)/2;
	var h = ($(document).height()-700)/2;
 	$('#book').offset({ top: h, left: w });
}