I have constructed a simple site to illustrate the problem at http://www.weyfringe.co.uk/test/test.htm.
The text "UK-wide demo service" is a link to a javascript alert, but I do not want the text underlined in blue. Hence text-decoration:none is included as an in-line style tag and also in the css for the containing div and span. However Firefox still puts the blue underline in. How can I remove it? I have validated both HTML and css successfully in W3C. Any suggestions gratefully received! Thank you, PeterG

the text-decoration:none is applied to the span in the page NOT to the anchor.
it should be applied specifically to the anchor element
add

#titleBorder a {
text-decoration:none;
}

to the style sheet

Excellent! Very many thanks for your quick response!
Cheers, PeterG