note 18048 rejected from function.imagearc by irc-html

I'm looking for a simple (short) way to make a "thick" circle. The circles drawn using the arc function so far are only 1 or 2 pixels thick. I need something about 4 - 5 pixels thick to see it on a web page. I haven't tryed multiple filled arcs yet because I don't think the transparency will work correctly - I need to see through the center of the circle. And lastly - I would only like to work with JPEG format (because of copyrights and all that). Thanks, carp