I have a nice bit of code for my navigation menus that make them change when the mouse goes over (I picked this up and don't fully understand how it works).

I would like to add a click sound when a button is actually selected.
The code is:
<TD CLASS="MenuOff" ONMOUSEOVER="this.className='MenuOn';"
ONMOUSEOUT="this.className='MenuOff';" ONCLICK="window.location.href = '#';"
ONMOUSEDOWN="this.className='MenuClick';" >&nbsp;<A

What do I need to add in for the click sound (I have a .wav file with a click on)?