title: combine dynamic and static classes through css binding, knockout.js
body: <p>In knockout.js we can use css binding for static classes</p>
  
  <pre><code>&lt;div data-bind="css: {'translucent ': number() &lt; 10}"&gt;static dynamic css classes&lt;/div&gt;
  </code></pre>
  
  <p>and dynamic</p>
  
  <pre><code>&lt;div data-bind="css: color"&gt;static dynamic css classes&lt;/div&gt;
  </code></pre>
  
  <p>I've tried <a href="http://jsfiddle.net/tT9PK/1/">http://jsfiddle.net/tT9PK/1/</a> to combine it in something like </p>
  
  <pre><code>css: {color, translucent: number() &lt; 10}
  </code></pre>
  
  <p>to get dynamic class <code>color</code> and static <code>translucent</code> at the same time, but I get an error. Is there a way to do that?</p>