Google Analytics - Tracking clicks on print button?

Hi,

I’m trying to track the clicks being made to a print button…

i know to add analytics to an outbound like it would mean using something like this

<a href=“http://www.example.co.uk” onClick=“javascript: pageTracker._trackPageview (‘/outgoing/example_co.uk’);”>

but how would I assign the analytics to my current button which already has an onClick function

this is my current print button:

<a href=“#” onclick=“window.print();return false;” class=“otherbutton”></a>

Any idea how I would incorporate the two of on click funtions on the same print button?