question: protected void handleHoverEvent ( Event evt ) { if ( evt . getTarget ( ) instanceof Element ) { Element e = ( Element ) evt . getTarget ( ) ; Node next = e . getNextSibling ( ) ; if ( next instanceof Element ) { toggleTooltip ( ( Element ) next , evt . getType ( ) ) ; } else { LoggingUtil . warning ( "Tooltip sibling not found." ) ; } } else { LoggingUtil . warning ( "Got event for non-Element?!?" ) ; } }
target:  Handle the hover events.