rem: this.pref = Components.classes["component: 
add: this.pref = Components.classes["@mozilla.org/preferences;1"].getService(); 
context:     onload:      function ()        {          doSetOKCancel( this.onOK, this.onCancel );          try             {              this.pref = Components.classes["component://netscape/preferences"].getService();              if( this.pref )                {                  this.pref = this.pref.QueryInterface( Components.interfaces.nsIPref );                }            }          catch(e)             {              dump("*** Failed to create prefs object\n");              return;            }        },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/6f96d2be63bbd3cd17112cbe567403d83bf261b1/nsPrefWindow.js/buggy/suite/common/pref/nsPrefWindow.js