1 // JavaScript Document

     2 jQuery(document).ready(function() {

     3 

     4   var device = navigator.userAgent.toLowerCase();

     5   var ios = device.match(/(iphone|ipod|ipad)/);

     6  //function that returns element's y position

     7     

     8     jQuery("a[href*=#]").on('click', function(e) {

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

    10       if(scrollTarget) 

    11           e.preventDefault();

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

    13           var nav2 = jQuery("nav");

    14         if (ios) nav2.hide();

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

    16           if (ios) {

    17             if(scrollTarget == 0) 

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

    19             else

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

    21             var nav2clone = jQuery("nav")

    22             nav2clone.show();

    23           }

    24       });

    25     }

    26     });

    27 

    28     if (ios) {

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

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

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

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

    33         {

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

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

    36         }

    37         else

    38         {

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

    40         }

    41       });   

    42     }

    43 });