GitTolxrSwitcher is a Firerox Add-on for you to switch between the CMSSW Github and the CMSSW lxr cross referencer.
When you are in a specific page of one of the website, clicking on the add-on icon brings you to the corresponding webpage in the other website.
In the options of the add-on, you can specify

• If you want the page to be open in a new tab or in the current one.
• The default CMSSW Git branch if you're not switching from a specific version in lxr

• Last version
• All versions

To install, simply drop the downloaded file in Firefox and it will be recognized as an add-on to be installed.

Previously, CMS used cvs instead of git, you can find bellow the link to the previous add-on to switch between the CMSSW cvs and the CMSSW lxr cross referencer.

• Last version