scopesessions.org/js/custom.js

var scrolling = false;
var navigatorOpen = false;
var topButtonVisible = false;

$(document).ready(function() {

 $(function() {
  $.scrollIt();
 });

 $(".artist-media img").imagefill();
 //$(".upcoming-media img").imagefill();

 var rnd = Math.floor(Math.random() * 13);

 $(function() {
  $.vegas({
   src: '/assets/bgphotos/' + rnd + '.png'
  });
  $.vegas('overlay', {
   src: '/assets/bgphotos/overlay.png'
  });
 });

 $(".navigator-toggle").click(function() {
  if (navigatorOpen) {
   closeTopMenu();
  } else {
   openTopMenu();
  }
 });

 $(".topic").click(function() {
  closeTopMenu();
 });

 function openTopMenu() {
  console.log('openTopMenu');
  if (!scrolling && !navigatorOpen) {
   scrolling = true;
   $(".navigator").slideDown("slow", function() {
    scrolling = false;
    navigatorOpen = true;
   });
  }
 }

 function closeTopMenu() {
  console.log('closeTopMenu');
  if (!scrolling && navigatorOpen) {
   scrolling = true;
   $('.navigator').slideUp("slow", function() {
    scrolling = false;
    navigatorOpen = false;
   });
  }
 }

 function showTopButton() {
  console.log('showTopButton');
  if (!topButtonVisible) {
   $('.top-button').fadeTo("slow",1.0, function() {
    topButtonVisible = true;
   });
  }
 }

 function hideTopButton() {
  console.log('hideTopButton');
  if (topButtonVisible) {
   $('.top-button').fadeTo("slow",0.0, function() {
    topButtonVisible = false;
   });
  }
 }

 var timeout = null;

 $(window).scroll(function() {

  var navbarHeight = $('.navbar').height();
  if (navigatorOpen){
   navbarHeight += $('.navigator').height() - 40;
  }

  console.log('scroll ' + $(window).scrollTop() + ' ' + navbarHeight);
  if (!timeout) {
   timeout = setTimeout(function() {
    clearTimeout(timeout);
    timeout = null;
    if ($(window).scrollTop() >= navbarHeight) {
     if (navigatorOpen)
      closeTopMenu();
     if (!topButtonVisible)
      showTopButton();
    } else{
     if (topButtonVisible)
      hideTopButton();
    }
   }, 250);
  }
 });

 if ( $.cookie('firstVisit') != 'yes' ) {
  setTimeout( function() {
   openTopMenu();
  }, 2000 );
  $.cookie('firstVisit', 'yes');
 }

});