BC/AD or BCE/CE Era Notation Selector

want you it: the you your to. how all website" website. globally to previous use checkbox "use this bce/ce. functionality. you you once. the need on website the top notations choice sure for is make to websites select can individually. it for add be activate this the to bc/ad only on change have will 1. this later to need if 2. step. extension use that 3. era applied to you that this extension customize or you choice where this on each bar. make any selected selected to website