<script>
$(document).click( function(event){
if( $(event.target).closest('.filtrBlock [type="checkbox"]').length )
return;
jQuery('.js-pokazat-apply-btn').fadeOut();
event.stopPropagation();
});
</script>
jQuery('.filtrBlock [type="checkbox"]').focusout(function(){
jQuery('.js-pokazat-apply-btn').fadeOut();
});