how do i stop Mozilla from auto changing tabs when i open a new tab?

[Orion]

I had this as a setting but the browser reset and now I can't find it.
So if I click a link i don't want that tab to open on its own.

[God of the Trumpet]

Click on Tools, Options, Tabs and uncheck the box that says, "When I open a new tab, switch to it immediately."

[Argus Tuft]

If you mean your Firebox browser, go to options, then tabs, and make sure the first four (of six) boxes are ticked.

[TechMan]

On windows, do as god of the trumpet said. if you're on mac, then tap Command+,
yes, the command key, and the comma key. then it will bring up preferences, then just go to the tabs tab, and then uncheck the last option. hope I could help