parameters:
- alt text alternative to the image, for visually impaired users
- width resize image to this width. If no height is specified, height will be resized to preserve the aspect ratio.
- height resize image to this height. If no width is specified, width will be resized to preserve the aspect ratio.
example: [img width=30]http://wiki.simplemachines.org/skins/common/images/button_media.png[/img]