Latest code does not work on Safari 6.0.4
You may go to http://www.lenswish.com/start.
choose facebook and it will lead to your friends. Clicking on "Select" will show block ui in Chrome/IE/Firefox. Somehow it's not working for Safari.
We have same problem on safari 7. No event fired.
I just tested the demo page with Safari 7 and it works fine for me.
http://jquery.malsup.com/block/#demos
What "event" is not firing?
Sorry for delay,
Problem is on events : unload and beforeUnload. Works fine on ie, FF, chrome
but on safari I never see blockui open even if I use A huge loading page.
It worked on Safari 5.x but not on Safari 6 and 7
If I put a javascript debug point I see Blockui, but without any debug blockui never appear
Here is a jsfiddle to test :
http://jsfiddle.net/wA4pt/2/