Applying Special Effects to Images
These include drop shadow, radiant glow and transparent effects which often will not be rendered during the publishing process.
If the special effects do display on your web pages, that's great, carry on.
If not, here is a work-around: Zoom in and take a screen shot of the image. Paste the screenshot into a photo-editer. Crop and save as JPG. Then insert that JPG into your project to replace the original image.