frozen slider

HTML

<link rel="stylesheet" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css">
<script src="http://jsxgraph.uni-bayreuth.de/~michael/jsxgraph-nightly/2013-01-13.2101/jsxgraphcore.js"></script>
<div id="jxgbox" style="width:500px; height:500px;"></div>

JavaScript

var board = JXG.JSXGraph.initBoard('jxgbox', {
    boundingbox: [-5, 5, 5, -5],
    axis: true
});

var sl = board.create('slider', [[-3, 0], [3, 0], [0, 5, 10]], {point1: {frozen: true}, point2: {frozen: true}});