====== Firefox web browser ======

====== Removing horizontal tabs ======

When installing //[[http://addons.mozilla.org/fr/firefox/addon/tree-style-tab/|Tree Style Tab]]//, there is no option to remove the horizontal tabs, but that can be done by adding following lines in the ''chrome/userChrome.css'' in your profile directory (type ''about:support'' in //Firefox//):

<code css>
#TabsToolbar {
    visibility: collapse;
}
</code>


If the file does not exist, create it and put following line at the bottom (seems not to be required):

<code css>
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
</code>