Unfortunately, I don't believe there is. I know when I convert shapefiles to be kmls in Google Earth that it will popup the attribute table for that feature on click, but with rasters with or without and attribute table, I'm not getting anything. Perhaps you will need to make a very fine fishnet polygon behind the raster which stores the elevation values in an attribute table that will show up on a click, could work as a possible solution. Maybe Raster to Point, then Create Fishnet, and then a spatial join? If your dataset is very large, it could become impractical, but might be worth a shot.
