Thanks, jackie_w : I guess the main issue I faced was moving the ToC around. I was unable to move it when I moved the e-book viewer to another window. (The window's titlebar was rendered out of the plane of view).
Thanks, theducks : I was able to move the floating ToC window using the 'Alt+Space' trick. I like the floated version as well, but I was unable to get it out of the way when I wanted to use that monitor to display another window (dual-monitor setup) and view the ebook on the secondary display.
I am now able to move the ToC window around. I also did not know about the double-click-to-dock-the-ToC trick. I think it will come in useful when I read with the viewer maximized. Thanks very much for the super-prompt help