Firebug-Lite is enabled through the javascript function in the bookmark, and from there it just loads the javascript hosted at getfirebug.com.
If you control the website you're looking at, and want firebug to pop-up for that website, then you can add this to your code:
<script type="text/javascript">
function bookmarklet(F,i,r,e,b,u,g,L,I,T,E){
if(F.getElementById(b))
return;
E=F[i+'NS']&&F.documentElement.namespaceURI;
E=E?F[i+'NS'](E,'script'):F[i]('script');
E[r]('id',b);
E[r]('src',I+g+T);E[r](b,u);
(F[e]('head')[0]||F[e]('body')[0]).appendChild(E);
E=new Image;
E[r]('src',I+L);
}
$(document).ready(function() {
bookmarklet(document,'createElement','setAttribute',
'getElementsByTagName','FirebugLite','4','firebug-lite.js',
'releases/lite/latest/skin/xp/sprite.png','https://getfirebug.com/','#startOpened');
});
</script>
Or, did you mean that when you're browsing you always want Firebug / Firebug-Lite at the bottom?