Popup with cursor - Flash MX

Helloe all,

Do u know how to do the little info popup with the cursor on this page, http://www.flashdesigntemplates.com/imagevue/->click on main menu->cisck on pets->choose one of the photo gallery. Once u insed the Pets gallery, move ur cursor to the file name of the pic, then move the cursor to Dimension, there u have a little popup. How do u do that?