Normalized hide address bar for iOS & Android on page load and orientation change

Hide Mobile Browser Chrome

/*
  * Normalized hide address bar for iOS & Android
  * (c) Scott Jehl, scottjehl.com
  * 
  * Modified by
  * (c) Tony Schneider
  * 
  * MIT License
*/
(function( win ){
  var doc = win.document;

  // If there's a hash, or addEventListener is undefined, stop here
  if( !location.hash && win.addEventListener ){
    //scroll to 1
    window.scrollTo( 0, 1 );
    var scrollTop = 1;

    var getScrollTop = function() {
      return win.pageYOffset || doc.compatMode === "CSS1Compat" && doc.documentElement.scrollTop || doc.body.scrollTop || 0;
    };

    //reset to 0 on bodyready, if needed
    var bodycheck = setInterval(function(){
      if( doc.body ){
        clearInterval( bodycheck );
        scrollTop = getScrollTop();
        win.scrollTo( 0, scrollTop === 1 ? 0 : 1 );
      }
    }, 15 );

    function removeBrowserChrome() {
      setTimeout(function(){
        //at load, if user hasn't scrolled more than 20 or so...
        if( getScrollTop() < 20 ){
          //reset to hide addr bar at onload
          win.scrollTo( 0, scrollTop === 1 ? 0 : 1 );
        }
      }, 0);
    };

    if (win.onorientationchange !== undefined) {
      win.onorientationchange = removeBrowserChrome;
    }

    win.addEventListener( "load", function(){
      removeBrowserChrome();
    });
  }
})(this);