<!doctype html>
<html>
<head>
<script src="js/jquery/1.11.3/jquery.min.js"></script>
</head>
<body>
<ul>
<li>list item 1</li>
<li>list item 2</li>
<li id="id-item-3">list item 3</li>
<li>list item 4</li>
<li>list item 5</li>
<li id="id-item-6">list item 6</li>
<li>list item 7</li>
</ul>
<script>
$( "#id-item-3" ).nextUntil("#id-item-6").css( "background-color", "brown" );
</script>
</body>
</html>