I have created the raster mosaic with some aerial photography for my local authority , Im very happy with the results , the only problem i have are the grid lines and extents window are still visible at the full extent , when i zoom into a particular area the green gridlines are still there .Is there anyway of not showing the gridlines , so in essence just the aerial photography, excuse my lack of knowledge as usually there is a slight tweak that will give me the results that i want , Any help would be appreciated