Suppress new windows
From MozillaZine Knowledge Base
If you want to make full use of tabbed browsing then you know how annoying it is when a new window opens after clicking on a target="_blank"
link. Do not fear! Firefox and Mozilla Suite have everything you ever wanted built in!
Mozilla Suite
- Go to about:config (through your Location Bar)
- Put browser.block into the filter bar
- Now right-click on browser.block.target_new_window's value and choose modify
- Change the value to true, restart Mozilla Suite and you are done
Firefox
- Go to about:config (through your Location Bar)
- Right-click anywhere in the browser and select "New -> String"
- Paste in browser.block.target_new_window for the preference and true for the value
- Change the value to true, restart Firefox and you are done