i honestly believe that using jQuery would simplify much of this complex javascript code in roundcube. There would be significantly less code, that is also easier to read. We could need things like: "return rcmail.folder_mouse_up('[Gmail]/All Mail')" on every folder link because we could bind classes with jQuery. jQuery has excellent AJAX methods and it works cross browser. There are hundreds of plugins easily enabling right-click functionality. Also skins could take advantage of jQuery, creating more dynamic and rich themes. I know all of my themes that I am going to make will include jQuery because of its advantages. If this has been discussed before, I am sorry because I am new to the forums (but not to RoundCube).