vs. 
- Transparency is a feature of the GIF image format, not of the HTML language.
- A dramatic effect widely used on web pages
- Use the ordinary <IMG> tag
- Certain pixels in the image are made transparent so that
the page's own background color or image shows through
- Transparency is a feature of the GIF89 format, not of GIF87, nor of JPEG
- Select images in which the background is one color.
Photographs rarely work well, since their backgrounds are rarely a single,
uniform color.
- Make a GIF image's background transparent with Adobe Photoshop,
Jasc Paintshop Pro, Microsoft Photopaint, Microsoft Image Composer,
or other image editor
- In Photoshop:
- Convert to indexed color (Image menu: Mode = indexed color)
- File menu: Export, GIF89a, click on the background with the eyedropper
