$(window).on('scroll', function(event) {
    var scrollValue = $(window).scrollTop();
    if (scrollValue > 70) {
         $('.header_menu').addClass('fixed-top animated slideInDown');
    } else{
      $('.header_menu').removeClass('fixed-top animated slideInDown');
    } 
});


  
"use strict";


/*======== Doucument Ready Function =========*/
jQuery(document).ready(function () {

      // slicknav
    /**
     * Slicknav - a Mobile Menu
     */
    var $slicknav_label;
    $('.responsive-menu').slicknav({
      duration: 500,
      easingOpen: 'easeInExpo',
      easingClose: 'easeOutExpo',
      closedSymbol: '<i class="fa fa-plus"></i>',
      openedSymbol: '<i class="fa fa-minus"></i>',
      prependTo: '#slicknav-mobile',
      allowParentLinks: true,
      label:"" 
    });

    var $slicknav_label;
    $('#responsive-menu').slicknav({
      duration: 500,
      easingOpen: 'easeInExpo',
      easingClose: 'easeOutExpo',
      closedSymbol: '<i class="fa fa-plus"></i>',
      openedSymbol: '<i class="fa fa-minus"></i>',
      prependTo: '#slicknav-mobile',
      allowParentLinks: true,
      label:"" 
    });

    
    /**
     * Sticky Header
     */
        
    $(window).scroll(function(){

      if( $(window).scrollTop() > 10 ){

        $('.navbar').addClass('navbar-sticky-in')

      } else {
        $('.navbar').removeClass('navbar-sticky-in')
      }

    })
    
    /**
     * Main Menu Slide Down Effect
     */
     
    var selected = $('#navbar li');
    // Mouse-enter dropdown
    selected.on("mouseenter", function() {
        $(this).find('ul').first().stop(true, true).delay(350).slideDown(500, 'easeInOutQuad');
    });

    // Mouse-leave dropdown
    selected.on("mouseleave", function() {
        $(this).find('ul').first().stop(true, true).delay(100).slideUp(150, 'easeInOutQuad');
    });

    /**
     *  Arrow for Menu has sub-menu
     */
    if ($(window).width() > 992) {
      $(".navbar-arrow ul ul > li").has("ul").children("a").append("<i class='arrow-indicator fa fa-angle-right'></i>");
    }

});


 (function(){

    var doc = document.documentElement;
    var w   = window;

    /*
    define four variables: curScroll, prevScroll, curDirection, prevDirection
    */

    var curScroll;
    var prevScroll = w.scrollY || doc.scrollTop;
    var curDirection = 0;
    var prevDirection = 0;

    /*
    how it works:
    -------------
    create a scroll event listener
    create function to check scroll position on each scroll event,
    compare curScroll and prevScroll values to find the scroll direction
    scroll up - 1, scroll down - 2, initial - 0
    then set the direction value to curDirection
    compare curDirection and prevDirection
    if it is different, call a function to show or hide the header
    example:
    step 1: user scrolls down: curDirection 2, prevDirection 0 > hide header
    step 2: user scrolls down again: curDirection 2, prevDirection 2 > already hidden, do nothing
    step 3: user scrolls up: curDirection 1, prevDirection 2 > show header
    */

    var header = document.getElementById('header_menu');
    var toggled;
    var threshold = 200;

    var checkScroll = function() {
        curScroll = w.scrollY || doc.scrollTop;
        if(curScroll > prevScroll) {
            // scrolled down
            curDirection = 2;
        }
        else {
            //scrolled up
            curDirection = 1;
        }

        if(curDirection !== prevDirection) {
            toggled = toggleHeader();
        }

        prevScroll = curScroll;
        if(toggled) {
            prevDirection = curDirection;
        }
    };

    var toggleHeader = function() { 
        toggled = true;
        if(curDirection === 2 && curScroll > threshold) {
            header.classList.add('hide');
            jQuery('.sticky1').addClass('tab-sticky');
        }
        else if (curDirection === 1) {
            header.classList.remove('hide');
            jQuery('.sticky1').removeClass('tab-sticky');
        }
        else {
            toggled = false;
        }
        return toggled;
    };

    window.addEventListener('scroll', checkScroll);

})();