Suppress new windows
From MozillaZine Knowledge Base
This tip supports Firefox and Mozilla Suite
If you want to make full use of Mozilla's tabed browsing features 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 have everything you ever wanted built in!
Override New Windows
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 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 preferance and true for the value
- Change the value to true, restart mozilla and you are done
- Source:Blogzilla