/**
 * Created by Charlie on 17/05/2017.
 */
function lockScrollAndGetScrollTop() {
  $('body').css('top', -(document.documentElement.scrollTop) + 'px')
      .addClass('no-scroll');
}


function unlockScroll() {
  $('body').css('top', -(document.documentElement.scrollTop) + 'px')
      .removeClass('no-scroll');
}