Bonjour,
voilà le code
<head>
<script type="text/javascript">
function HideShow(id)
{
var o = document.getElementById(id);
if(o.style.display == '' || o.style.display == 'block') o.style.display = 'none';
else o.style.display = 'block';
}
</script>
</head>
<body>
<div id="links">
<h2 id="links_title" onclick="HideShow('links_content')" style="cursor: pointer;">Liens (afficher/cacher)</h2>
<div id="links_content" class="content">
<h3>Sites amis</h3>
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
</div>
</div>
<script type="text/javascript">
document.getElementById('links_content').style.display = 'none';
</script>
<p>autre paragraphe
</p>
</body>
.
