Thank You for perfect "Bookmarks Organizer" and for the operating answer. I ask You a pardon - at repeated starting was found, what, nevertheless, commands "Edit" and "Delete" appear at induction of the mouse for all items, EXCEPT FOR the first item. (What for with the mouse?). To tell the truth, hand-handling of hundreds items is difficult. It would be nice, if it would be possible to define an main-folder ("Collection"). It for READ-ONLY. And to check other bookmarks on secondariness in relation to a main-folder. Then by the additional command to delete automatically its duplicates from other folders. Forgive my unattention. Thank's.

!!! NOW IT IS NOT ACTUAL : (The script has checked up all mine 2783 bookmarks on doubles. Has detected 681 error. Now a green asterisk with three running points. And doesn't offer any further operations. The naked list in some hundreds items on which there is NO possibility of handling).