DarkLotos,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
</head>
<body>
<div id="news">
<div id="news_content">1
</div>
<form name="news_links">
<ul>
<li><input type="radio" name="link" checked/>1</li>
<li><input type="radio" name="link" />2</li>
<li><input type="radio" name="link" />3</li>
<li><input type="radio" name="link" />4</li>
<li><input type="radio" name="link" />5</li>
</ul>
</form>
</div>
<script>
var l = document.news_links.link.length, a = 0;
setInterval(function()
{
a = ++a % l;
document.news_links.link[a].checked = true;
document.getElementById('news_content').innerHTML = a + 1
}, 2000)
</script>
</body>
</html>