how to have tab-specific xul control with firefox
问题 let me put it simple. With Firefox 29, I add a check box control next to the back & forward button in the toolbar "nav-bar". It works. I mean I can do check and uncheck, and the javascript code will be triggered. Now, my problem: after I checked the checkbox in one tab, I found that the checkbox in all other tabs are also checked, and if I uncheck any of them, the checkbox in all other tabs will be unchecked. Why they change as one? I would like them to be unrelated or separated. In another