I was looking for a very simple image gallery and found this plugin
I have done everything correct I think, but if I click a thumbnail the image is not changing but instead the page is jumping to the top. This is the HTML:
<!DOCTYPE html>
<html lang="nl">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Tomossloop.nl | Occasions van Tomossloop.nl</title>
<meta name="description" content="Koop uw occasions bij Tomossloop.nl">
<meta name="keywords" content="occasions,bromfietsen,snoorfietsen,scooters">
<meta name="robots" content="index, follow">
<meta name="revisit-after" content="7 days">
<link rel="stylesheet" type="text/css" href="/css/website.css">
<link rel="stylesheet" type="text/css" href="/css/form-values.css">
<link rel="stylesheet" type="text/css" href="/css/responsiveslides.css">
<link rel="stylesheet" type="text/css" href="/css/zebra_pagination.css">
<link rel="stylesheet" type="text/css" href="/css/jquery-ui.min.css" media="screen">
<link rel="stylesheet" type="text/css" href="/css/ui-dialog.css" media="screen">
<link rel="stylesheet" type="text/css" href="/css/jquery.fancybox.css" media="screen">
<link rel="stylesheet" type="text/css" href="/css/simplegallery.css" media="screen">
<link rel="stylesheet" href="/css/responsive.css">
</head>
<body id="occasions_">
<div id="wrapper">
<section id="top-line">
<div class="inside">
<h2>06-53877887</h2>
<form action="/artikelen/zoeken" method="post" name="zoek-form" id="zoek-form">
<input name="nieuw" type="text" placeholder="Onderdelen nieuw">
<input name="gebruikt" type="text" placeholder="Onderdelen gebruikt">
<button type="submit">Zoeken</button>
</form>
</div>
</section>
<header>
<div class="inside">
<section id="logo">
<a href="/"><img src="/images/logo.png"></a>
</section>
<section id="alt_logo">
<a href="/"><img src="/images/alt_logo.png"></a>
</section>
<div class="winkelmandje">
<ul>
<li><i>0</i></li>
</ul>
</div>
<nav id="main-nav">
<ul>
<li><a href="/" class="home">Home</a></li>
<li><a href="/catalogus" class="catalogus">Catalogus</a></li>
<li><a href="/videos" class="videos">Videos</a></li>
<li><a href="/gastenboek" class="gastenboek">Gastenboek</a></li>
<li><a href="/contact" class="contact">Contact</a></li>
</ul>
</nav>
<div class="rdw">
<img src="/images/rdw.png" alt="Tomossloop.nl is RDW erkend">
</div>
</div>
</header>
<div class="static-wrapper">
<li><img src="/images/slides/ts03.jpg"></li>
</div>
<main id="main">
<aside id="sidebar">
<section class="sidebox">
<h2>Onderdelen nieuw</h2>
<ul>
<li class="framedelen_nieuw"><a href="/artikelen/categorieen/framedelen?conditie=nieuw" >Framedelen</a></li>
<li class="motordelen_nieuw"><a href="/artikelen/categorieen/motordelen?conditie=nieuw" >Motordelen</a></li>
<li class="electrichedelen_nieuw"><a href="/artikelen/categorieen/electrichedelen?conditie=nieuw" >Electrische delen</a></li>
<li class="diversen_nieuw"><a href="/artikelen/categorieen/diversen?conditie=nieuw" >Diversen</a></li>
</ul>
</section>
<section class="sidebox">
<h2>Onderdelen gebruikt</h2>
<ul>
<li class="framedelen_gebruikt"><a href="/artikelen/categorieen/framedelen?conditie=gebruikt" >Framedelen</a></li>
<li class="motordelen_gebruikt"><a href="/artikelen/categorieen/motordelen?conditie=gebruikt" >Motordelen</a></li>
<li class="electrichedelen_gebruikt"><a href="/artikelen/categorieen/electrichedelen?conditie=gebruikt" >Electrische delen</a></li>
</ul>
</section>
<section class="sidebox">
<h2>Occassions</h2>
<ul>
<li><a href="/occasions/catagorie/bromfietsen">Bromfietsen</a></li>
<li><a href="/occasions/catagorie/snorfietsen">Snorfietsen</a></li>
<li><a href="/occasions/catagorie/scooters">Scooters</a></li>
<li><a href="/occasions/catagorie/diversen">Diversen</a></li>
</ul>
</section>
<section class="sidebox">
<h2>Bezoekers</h2>
<p>Vandaag<span>8</span></p>
<p>Online<span>1</span></p>
</section>
</aside>
<div id="content">
<h1>Header</h1>
<div id="occasion_fotos">
<div class="fotos content">
<img src="/images/occasion_fotos/fotos/f7e4bd9d9267f17ebc0dfb7b1a44a35c.jpg" class="image_1" alt="" />
<img src="/images/occasion_fotos/fotos/720e815fd1443ccb8df4ba396c37c62c.jpg" class="image_2" style="display:none" alt="" />
<img src="/images/occasion_fotos/fotos/3cf51158ca31587c56ae6687886a178d.jpg" class="image_3" style="display:none" alt="" />
<img src="/images/occasion_fotos/fotos/bf6daea0612c705cfcc05bb8d4a4e414.jpg" class="image_4" style="display:none" alt="" />
</div>
<div class="thumbnails thumbnail">
<div class="thumb">
<a href="#" rel="1">
<img src="/images/occasion_fotos/thumbs/f7e4bd9d9267f17ebc0dfb7b1a44a35c.jpg" id="thumb_1" alt="" />
</a>
</div>
<div class="thumb">
<a href="#" rel="2">
<img src="/images/occasion_fotos/thumbs/720e815fd1443ccb8df4ba396c37c62c.jpg" id="thumb_2" alt="" />
</a>
</div>
<div class="thumb">
<a href="#" rel="3">
<img src="/images/occasion_fotos/thumbs/3cf51158ca31587c56ae6687886a178d.jpg" id="thumb_3" alt="" />
</a>
</div>
<div class="thumb">
<a href="#" rel="4">
<img src="/images/occasion_fotos/thumbs/bf6daea0612c705cfcc05bb8d4a4e414.jpg" id="thumb_4" alt="" />
</a>
</div>
</div>
</div>
</div></main>
</div>
<footer>
<div id="footer">
<section class="column">
<h2>Informatie</h2>
<ul>
<li><a href="/contact" class="contact">Contact</a></li>
<li><a href="/algemene_voorwaarden" class="algemene_voorwaarden">Algemene voorwaarden</a></li>
<li><a href="/privacy_beleid" class="privacy_beleid">Privacy beleid</a></li>
<li><a href="/cookies" class="cookies">Cookies</a></li>
</ul>
</section>
<section class="column">
</section>
<section class="column">
<h2>Nieuwsbrief</h2>
<div id="nieuwsbrief-status"></div>
<form action="/add_nieuwsbrief_entry" method="post" name="nieuwsbrief-form" id="nieuwsbrief-form">
<input name="nieuwsbrief_email" id="nieuwsbrief_email" type="text" placeholder="Email adres" required>
<button type="submit">Aanmelden</button>
</form>
<ul class="social">
<li><img src="/images/Facebook.png" alt="Like ons op Facebook"></li>
<li><img src="/images/YouTube.png" alt="Bekijk Tomossloop.nl instructie filmpjes op Youtube"></li>
</ul>
</section>
<section id="cridentials">
<p>Copyright © 2015. All rights reserved. Tomossloop.nl | KvK-nummer: 62491997</p>
<p>Powered & Designed by <a href="http://www.donaldboers.nl" target="_blank">Donald Boers</a></p>
</section>
</div></footer>
<div class="cookies"><p>Voor het optimaal functioneren van de website maakt Tomossloop.nl gebruik van cookies. <a class="algemene_voorwaarden" href="/cookies">Leer meer over cookies</a> <a href="#" id="close-cookies" class="close-cookies">x</a></p></div>
<div id="bericht" style="display: none; z-index: 100000;"></div>
<script type="text/javascript" src="/js/jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="/js/jquery-ui.min.js"></script>
<script type="text/javascript" src="/js/responsiveslides.min.js"></script>
<script type="text/javascript" src="/js/jquery.fancybox.js"></script>
<script type="text/javascript" src="/js/jquery.cookie.js"></script>
<script type="text/javascript" src="/js/simplegallery.min.js"></script>
<script type="text/javascript" src="/js/script.js"></script>
<script type="text/javascript">
$('#occasion_fotos').simplegallery({
galltime : 400,
gallcontent: '.fotos',
gallthumbnail: '.thumbnails',
gallthumb: '.thumb'
});
</script>
</body>
</html>Does anyone see what I am doing wrong?
Thank you in advance