[no subject]

You could use this:

s/src="\([^"]*\)"/\Lsrc="\1"\E/g

The \L in the replacement pattern means "convert everything to lowercase
until you see a '\E'".  This works in sed and vi.  If you're using perl,
omit the backslashes in front of the parentheses and change \1 to $1:

s/src="([^"]*)"/\Lsrc="$1"\E/g

Note that I changed your match pattern slightly.  The pattern you had,
/src=\".*\"/, is likely to have unintended side effects, because it will
do a greedy match.  For example, if your html has the following line:

<img src="../Foo.GIF"> Blah blah blah Verbage, etc. <img src="../BAR.Gif">

Then all the verbage between the two image tags would get lowercased as
well, which is probably not what you want.

HTH,
Jason
-- 
Jason Day                                       jasonday at
<a  rel="nofollow" href="http://jasonday.home.att.net";>http://jasonday.home.att.net</a>                    worldnet dot att dot net
 
&quot;Of course I'm paranoid, everyone is trying to kill me.&quot;
    -- Weyoun-6, Star Trek: Deep Space 9


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