Following is a very simplistic example, but shows you another way to exclude an element. It uses the CSS child selector to say, 'anything that is a direct child of the body element will receive this style, and nothing else.' For an a tag, this is a valid approach since the a tag is inline; if a was a block-level element, it would not be valid XHTML 1.0 Strict.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>hello hello hello hello hello</title>
body > a
NOTE: This does not work in IE7 quirks mode. The DOCTYPE is required. Have not tested with DOCTYPES other than XHTML 1.0 Strict.