$(function(){

    var activeListItem = $('#sidebar .navigation li.active');
    var activeListItemParents = activeListItem.parents();
    var activeListItemParentsLength = activeListItemParents.length;

    for(var i = 0; i <= activeListItemParentsLength; i++){
        var node = activeListItemParents[i];
        if(node && node.tagName == 'LI' && node.classList.contains('has-sub-items')){
            node.classList.add('active');
        }
    }

    var siteListItems = document.querySelectorAll('#sidebar .navigation .has-sub-items');
    var siteListItemsLength = siteListItems.length;
    for(var i = 0; i < siteListItemsLength; i++){
        var siteListItem = siteListItems[i];

        siteListItem.addEventListener('click', function () {
            this.classList.toggle('active');
        });
    }

});