adding new bbcode to [img]

[mfacer]

I have been thinking about adding some additional code to the BBcode for the tag... eg:


[img border='1px solid black']http://heres/my/image


so when the BBcode parses it all, it would look like


<img src="http://heres/my/image" style="border: 1px solid black">


I guess it's just a preg replace thing?
how would I go about doing it?
thanks for any help....