tilelist hover captions

Hello Everyone,

I've got a tilelist that has about 100 small 25x25 pixel squares of images, much like a color picker.  When the user clicks on a cell, the corresponding jpeg is loaded (jpeg filenames are loaded from an xml file).  What I need to do is have a hover text box appear over the cell when the cursor is over a cell.  The text at this point would just need to display the name of the jpeg that was loaded into the cell.  Is there a way to do this?  I'm on CS4 using AS3.

Thanks in advance!

-Dave