Close window on Click

I have an image open in a new window (not a new page) when a thumbnail is clicked.  Can I have it close when clicked?

<img src="images/PPAdinner/small/100_2046.jpg" alt="pic" width="105" height="78" onClick="MM_openBrWindow('images/PPAdinner/100_2046.JPG','','location =yes,width=643,height=482')">

Thanks