Added Dan's on-page-unload notification.
Added Dan's on-page-unload notification.

hansjoachim/fitnesse,amolenaar/fitnesse,rbevers/fitnesse,jdufner/fitnesse,rbevers/fitnesse,hansjoachim/fitnesse,jdufner/fitnesse,jdufner/fitnesse,rbevers/fitnesse,amolenaar/fitnesse,amolenaar/fitnesse,hansjoachim/fitnesse