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Search plugins in Firefox 2 may refer to preference values for parameter values within <MozParam> elements. For example, a search plugin including this element:

<MozParam name="fr" condition="pref" pref="yahoo-fr" />

...would cause Firefox to consult the preference for its value, and then append fr= and the value of the preference to the search query string.

Possible values and their effects

A string containing the value to send with the variable name specified in the search plugin’s name attribute of a <MozParam> element.


  • These preferences are no longer used by the new search service, which is in place on the trunk (and will be used in Firefox 3).

First checked in

2006-09-08 by Benjamin Smedberg

Has an effect in

  • Mozilla Firefox (nightly branch builds since 2006-09-08; 2.0)

Related bugs

External links