Thanks, Linuxmint7. I did a search for this thread but was unable to find it.
I just want to add my support to the OP's request for a toggle bookmark bar button. It would add greatly to the convenience of the browser.
I'm with mb on this one. I've added your suggestion in the Suggestion Box since I was unable to find where you did this on June 3rd.
kc0886... just scroll down from the Overview to the Suggestion box and you'll find the thread there.