!function($){"use strict"
var $window=$(window)
function ScrollSpy(topbar,selector){var processScroll=$.proxy(this.processScroll,this)
this.$topbar=$(topbar)
this.selector=selector||'li > a'
this.refresh()
this.$topbar.delegate(this.selector,'click',processScroll)
$window.scroll(processScroll)
this.processScroll()}
ScrollSpy.prototype={refresh:function(){this.targets=this.$topbar.find(this.selector).map(function(){var href=$(this).attr('href')
return /^#\w/.test(href)&&$(href).length?href:null})
this.offsets=$.map(this.targets,function(id){return $(id).offset().top})},processScroll:function(){var scrollTop=$window.scrollTop()+10,offsets=this.offsets,targets=this.targets,activeTarget=this.activeTarget,i
for(i=offsets.length;i--;){activeTarget!=targets[i]&&scrollTop>=offsets[i]&&(!offsets[i+1]||scrollTop<=offsets[i+1])&&this.activateButton(targets[i])}},activateButton:function(target){this.activeTarget=target
this.$topbar.find(this.selector).parent('.active').removeClass('active')
this.$topbar.find(this.selector+'[href="'+target+'"]').parent('li').addClass('active')}}
$.fn.scrollSpy=function(options){var scrollspy=this.data('scrollspy')
if(!scrollspy){return this.each(function(){$(this).data('scrollspy',new ScrollSpy(this,options))})}
if(options===true){return scrollspy}
if(typeof options=='string'){scrollspy[options]()}
return this}
$(document).ready(function(){$('body').scrollSpy('[data-scrollspy] li > a')})}(window.jQuery||window.ender);