MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

    $('<a class="infoboxtoggle" href="#">+/-</a>').appendTo(
      $('.infobox tr.header').filter(function(){ return $(this).attr('header').split(" ").length > 1 }).find("th")
    );

    $(".infobox tr.header").each(function(){
      var $this = $(this);

      if( $this.hasClass("hidden") ){
        var firstclass = $this.attr("header").split(" ")[0];
        $this.siblings("." + firstclass).addClass("hidden");
      }
   });

    $('a.infoboxtoggle').click (
      function (infoboxtoggle)
      {
        var parent  = $(this).parent ();
        var grandparent  = parent.parent ();
        var firstclass  = grandparent.attr ('header').split(" ")[0];

        infoboxtoggle.preventDefault();
        grandparent.siblings ('.' + firstclass).has ('td').toggleClass ('hidden');
      }
    );