$('#iphone-screenshots').cycle({ 
    fx:      'scrollRight', 
    speed:    400, 
    timeout:  4500,
    pause: 2
});


$('#ipad-screenshots').cycle({ 
    fx:      'scrollLeft', 
    speed:    400, 
    timeout:  5000,
    pause: 1
});




$(function(){
  $('#tab').click(function(){
  $(".screenshots").toggle();
 });
});

function screen_ipad()
{
    $(".n_ipad").addClass("selected");
    $(".n_iphone").removeClass("selected");
}

function screen_iphone()
{
    $(".n_iphone").addClass("selected");
    $(".n_ipad").removeClass("selected");
}