On a side note, the "right-click to select nodes" doesn't work well in Firefox, with its "always show context menu" option. At the "up" event, the context menu

On a side note, the "right-click to select nodes" doesn't work well in Firefox, with its "always show context menu" option. At the "up" event, the context menu shows and the selection is erased. In general, using right click on web applications is a terrible idea, since the standard function in browsers is to show a context menu for the clicked element. IMHO a lightweight selection mode or quasimode would work better.