gistfile1.js

var lastKnownOrientation = null;

function rotate() {
  if(window.orientation != lastKnownOrientation) {
    lastKnownOrientation = window.orientation;
    updateRotation();
  }
}

function updateRotation() {
  if(lastKnownOrientation == 0) {
    $('body').attr("class", "h");
  } else {
    $('body').attr("class", "v");
  }

  $('#orientation').html("iPhone ist " + lastKnownOrientation + ' Grad gedreht.');
}


$(function() {
  rotate();

  $(document).resize(function(e) { rotate() });
})