[en] Fly-out Menus

The example "Use Parent as Toggle" does not work if there are multiple
'has-submenu' items next to eash other.

Moving a mouse directly along the menubar from one adjacent to the next
adjacent without having a spacer between means that multiple drop downs open
simultaneously and do not time-out.

Putting an empty <li></li> between two <li class="has=submenu".</li> fixes
this - but ONLY when the mouse is moved slowly over the gap.

Someone who does not have any impediment to smooth mouse movement moving the
mouse quickly across this gap will still experience the problem unless the
gap is quite wide.

Allan