// 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(e) {

      var scrollTarget = jQuery(this.hash).offset().top;

      if(scrollTarget) 

          e.preventDefault();

        if(parseInt(scrollTarget) !== parseInt(jQuery(window).scrollTop())) {

          var nav2 = jQuery("nav");

        if (ios) nav2.hide();

          jQuery('html,body').animate({scrollTop:scrollTarget}, 1000, "swing", function(evt) {

          if (ios) {

            if(scrollTarget == 0) 

                nav2.css({position:'absolute', top:jQuery("#intro").height()});

            else

                nav2.css({position:'absolute', top:scrollTarget});

            var nav2clone = jQuery("nav")

            nav2clone.show();

          }

      });

    }

    });

    if (ios) {

        jQuery(document).bind('touchmove',function(){

          var intro = jQuery("#intro"), nav2 = jQuery("nav");

          console.log(nav2.position().top);

        if(intro.height() != nav2.position().top)

        {

            nav2.css({position:'fixed', top:'0px'});

            console.log(nav2.position().top);

        }

        else

        {

            nav2.css({position:'relative', top: ''});

        }

      });   

    }

});