@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

@-moz-document url(chrome://browser/content/preferences/preferences.xul) {
   .paneSelector.chromeclass-toolbar { display: inline !important; text-align: center !important; } 
   #BrowserPreferences { width: 52em !important; } 
   #systemDefaultsGroup { display: none !important; }
   radio[pane="paneDownloads"]{ display: none !important; }}

/* Fonts dialog box */
@-moz-document url(chrome://browser/content/preferences/fonts.xul) { 
    #FontsDialog { width: auto !important; }}

/* Colors dialog box */
@-moz-document url(chrome://browser/content/preferences/colors.xul) { 
    #ColorsDialog { width: auto !important; }}

/* Download in Tab dialog box */
@-moz-document url(chrome://downintab/content/options.xul) {
    #downInTabPreferences { height: auto !important; }}

/* Organize Statusbar dialog box */
@-moz-document url(chrome://osb/content/osbOptions.xul) {
    #osb-options-dialog { width: 36em !important; }}