To hide the text you can add code to userChrome.css below the @namespace line.

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

#personal-bookmarks .toolbarbutton-text {display:none !important;}

See http://kb.mozillazine.org/Editing_configuration#How_to_edit_configuration_files

Thanks, but this is way too advanced for me....I seem to recall there was a menu choice somewhere that said "Show Icons Only" in the Bookmark Bar. I guess not.

The selection you are referring to applies only to icons other than the Bookmarks Toolbar (View > Toolbars > Customize > "Show:", change to "Icons Only"). The advice cor-el gives is probably the only solution to your question.

If you need more Bookmark Toolbar space, see Multirow Bookmarks Toolbar: https://addons.mozilla.org/en-US/firefox/addon/6937

There are extensions that can only show icons on the Bookmarks toolbar.
You can use one of them if my above posted solution (that can be done without extensions) is too complicated.

• Incredible Bookmarks: https://addons.mozilla.org/firefox/addon/50722
• Smart Bookmarks Bar: https://addons.mozilla.org/firefox/addon/4072

Thanks guys. The Smart Bookmarks addon did the trick!

We have updated Multirow Bookmarks Toolbar to work with Firefox 4.

https://addons.mozilla.org/en-US/firefox/addon/multirow-bookmarks-toolbar/

We have included Autohide and the ability to turn off the text on Bookmarks and Folders.

Please let us know how it works for you.

multirow