TL;DR IE sucks as hell How to get windows height that will be compatible with all the majors browsers ?

windowsheight.js

var getWindowHeight = function() {
  if (typeof(window.innerWidth) == 'number') {
    windowHeight = window.innerHeight;
  } else if (document.documentElement && document.documentElement.clientHeight) {
    windowHeight = document.documentElement.clientHeight;
  }
  return windowHeight;
};