KAndy – Live

$(function(){     $(window).bind(‘beforeunload’, function(event) {         event.preventDefault();         event.originalEvent.returnValue = ‘Are you sure?’;     }); // WebKit has bug https://bugs.webkit.org/show_bug.cgi?id=20135 window.onbeforeunload = function(){ return ‘Are you sure?’; } // Opera do not support onbeforeunload !!! });