I think you're talking about transparent colors.
With a .gif or .png type of image, you select one color to
be the transparent color, so that any background under the
image shows through wherever that transparent color appears.
Example, on this site:
The top logo and title is a .gif image with a transparent
color of white ... so the tan background shines through
anything that's white. The actual image is rectangular and
the background is pure white.
With a photo editor, or graphic image editor, you will see
the terms "transparent color" associated with .gif or .png
What's the difference between .gif and .png?
When .gif was first used, it was proprietary. Other graphic
editors couldn't use .gif, so they developed the .png type.
.png actually supports more colors than .gif originally did.
Now, .gif can be used by anyone and it has the added feature
of being able to combine for "animation". The "purist" in
graphics would always use .png type, but people of habit like
.gif images, and in most cases, are the most compact in size.
If you can give us a link to your site that has the graphics,
I can grab it and convert, showing you an example.
Keep in mind that converting .jpeg (.jpg) to .gif will cause
some color loss, because .gif can't support as many colors
as .jpg --- if that's an issue, try converting .jpg to .png
On 7/21/07, Vir Ü wrote:
> The graphics are stored at my website host. I use html
> codes to post the graphics. Some have a white background
> (which works fine IF you are using a white
> background...but I don't).
> I know you can add border=0 but that usually does not
> work. What else can we do?
> Thanks so much!