Firefox 16.2 conflict with disableSelection

Firefox 16.2 conflict with disableSelection

I have a code like below in ready function 

 $('DIV').disableSelection();
which is causing all the dropdowns to become inactive in Firefox 16.2 onwards. It works perfectly fine in every other browser including Firefox upto 16.1. I have reported this to Firefox also here:


Any clues why this is being blocked in Firefox 16.2?