// JavaScript Document
jQuery(document).ready(function() {

    var device = navigator.userAgent.toLowerCase();
    var ios = device.match(/(iphone|ipod|ipad)/);

 //function that returns element's y position

    jQuery("a[href*=#]").on('click', function() {
        var scrollTarget = jQuery(this.hash).offset().top;
        if(parseInt(scrollTarget) !== parseInt(jQuery(window).scrollTop())) {
            var intro = jQuery("#intro"),
                nav2 = jQuery(".nav2");
            if (ios) nav2.hide();
            jQuery('html,body').animate({scrollTop:scrollTarget}, 1500, function(evt) {
                if (ios) {
                    nav2.css({position:'absolute', top:scrollTarget + 34});
                    var nav2clone = jQuery(".nav2")
                    nav2clone.show();
                }
            });
        }
    });

    if (ios) {
        jQuery(document).bind('touchmove',function(){
            var intro = jQuery("#intro"),
                nav2 = jQuery(".nav2");
            if(intro.height() <= nav2.position().top)
            {
                nav2.css({position:'fixed', top:'34px'});
                nav2.show();
            }
            else
                nav2.hide();
        });
    }
});