Venegrad

function getScrollBarWidth(bool) {
  if(bool == true) {
    var $outer = $('<div>').css({visibility: 'hidden', width: 100, overflow: 'scroll'}).appendTo('body'),
        widthWithScroll = $('<div>').css({width: '100%'}).appendTo($outer).outerWidth();
    $outer.remove();
    return 100 - widthWithScroll;
  } else {
    return 0;
  }
}

Venegrad

$(document).click(function (event) {
    if (!$(event.target).closest(".selector").length) {
       // what event
    }

    event.stopPropagation();
});