I have been experimenting with displaying a popup window when a button is clicked on my Firefox extension's toolbar.
My popup is a panel with an iframe inside it that displays the actual content. No matter what attributes I set to my panel and iframe there is always an ugly border between my content and the edge of the popup window. I have tried changing my iframe attributes like: frameborder, seamless, marginheight, marginwidth etc. but these seem to have no affect on the window.
Does anybody have any ideas on how to remove this border?