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How to resize maximum or Minimum tab width in firefox15

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A: the "custom tab width" add on , is incompatible with this version (i mean version 15.0.1)

B: These 2 commands is not existed in "about:config" (in this version) : -Browser.tabs.tabMinWidth -Browser.tabs.tabMaxWidth

Now, What shoud i do ?!!

A: the "custom tab width" add on , is incompatible with this version (i mean version 15.0.1) B: These 2 commands is not existed in "about:config" (in this version) : -Browser.tabs.tabMinWidth -Browser.tabs.tabMaxWidth Now, What shoud i do ?!!

Chosen solution

This extension should be compatible with Firefox 16.0.1, the current release version. You should update your Firefox installation.
https://addons.mozilla.org/en-US/firefox/addon/custom-tab-width/

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Chosen Solution

This extension should be compatible with Firefox 16.0.1, the current release version. You should update your Firefox installation.
https://addons.mozilla.org/en-US/firefox/addon/custom-tab-width/

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Many Thanks :)