This below code hides underline on the hyperlinked text:
Code: <A HREF="http://www.mozilla.org/" STYLE="text-decoration:none;">Go to Mozilla Homepage</A>
Result: Go to Mozilla Homepage


However, the following code does not work on mozilla 5.0 (M8):
Code: <A HREF="http://www.mozilla.org/"><SPAN STYLE="text-decoration:none;">Go to Mozilla Homepage</SPAN></A>
Result: Go to Mozilla Homepage