How to add line numbers to all lines in Google Prettify?

I am using prettify:

<pre class="prettyprint linenums">
  some code
</pre>

It works but the line number show every 5 lines and not for every line. I am using these files

<link href="../src/prettify.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="../src/prettify.js"></script>

Basically at the end of this page http://google-code-prettify.googlecode.com/svn/trunk/styles/index.html you can see that I want, but I looked at that code and I can't figure it out.

Solution

The root cause is list-style-type: none in prettify.css:

/* Specify class=linenums on a pre to get line numbering */
ol.linenums { margin-top: 0; margin-bottom: 0 } /* IE indents via margin-left */
li.L0,
li.L1,
li.L2,
li.L3,
li.L5,
li.L6,
li.L7,
li.L8 { list-style-type: none /* <<< THIS is the cause! */ }
/* Alternate shading for lines */
li.L1,
li.L3,
li.L5,
li.L7,
li.L9 { background: #eee }

You can either remove that rule or override it with:

.linenums li {
    list-style-type: decimal;
}