Add close button to last tab in Firefox
Starting version Firefox 3.5, the browser is missing the close button on it’s last tab (when we have only one tab left).

In this case, if you want to close the current page and get a new blank tab, you have to open a new tab and then close this tab.
It’s an extra step for achieving something simple.
Here I present a very simple tweak to get back the close button on the last tab. There are addons to achieve the same effect but why to install addons for simple tweaks.
So, let’s do it:
1. Type about:config in the address bar and press enter.
2. Click the “I will be careful…” button.
3. Type tab in the Filter box.
4. Search the setting which ends with closeWindowWithLastTab.
5. Change it’s value from “true” to “false”.
6. Thats all !
Below is a screenshot of all the above steps….

After following the steps above, you will have the close button on the last tab.
