Developer by Chris Pederick. "The Web Developer extension for
Mozilla Firefox and Mozilla adds a menu and a toolbar to the
browser with various web developer tools." It will display
- WAVE - helps people perform design tasks that require human judgment (e.g. "Does this ALT text provide a functional equivalent for this image?"). The Wave displays the ALT and title attributes for images as well as links to any long descriptions it encounters.
- Outline CSS Background Images and Remove CSS Background Images Bookmarklets by Zoe Mickley Gillenwater can be helpful tools.
- Dreamweaver Help / Adding and modifying images
- How to Make Accessible Web Content Using Dreamweaver