Headers or Footers:
<script>
function browser_detect(){
$(function(){
//Created by Agent Moose
if ($.browser.mozilla) {$("#b_d").append("<b>Mozilla FireFox</b>")}
if ($.browser.msie) {$("#b_d").append("<b>Internet Explorer</b>")}
if ($.browser.safari) {$("#b_d").append("<b>Safari</b>")}
if ($.browser.opera) {$("#b_d").append("<b>Operta</b>")}
$("#bodyarea").before("Your using <span id='b_d'></span>")
});};
browser_detect();
</script>
This will just detect what browser a your using. SImple, yet awsome.