Modify links in HTML_Panel as it loads

Question

When loading an outside URL similar to the wikipedia example
in the HTML_Panel demo, the html that loads contains links
referencing the original source. So all the links in the wiki
example contain /wiki/link instead of
http://en.wikipedia.org/wiki/link.
Is there a way to modify the html after the html_panel is loaded to
replace all the <a href="/wiki/ with <a href="
http://en.wikipedia.org/wiki/
This would be a string replacement after the block loads. I
can't seem to figure out how to attach such a function on the block
after it is loaded. This would be very useful when loading HTML
from other websites, to keep their links pointing to the original
source.

Answer 1

What u could do is add an observer to your html panel that
monitors the onPostUpdate. On each update loop through your
<a> tags (could be done with
document.getElementsByTagName('a') ) check if they start with
/wiki/ if it does, just replace or change the href.