+ function ($){ 
'use strict'; 
var Affix = function (element, options){ 
this.options = $.extend({ 
}
, Affix.DEFAULTS, options); 
this.$target = $(_AN_Read_target('target', this.options)).on('scroll.bs.affix.data-api', $.proxy(this.checkPosition, this)).on('click.bs.affix.data-api', $.proxy(this.checkPositionWithEventLoop, this)); 
this.$element = $(element); 
this.affixed = null ; 
this.unpin = null ; 
this.pinnedOffset = null ; 
this.checkPosition(); 
} 
; 
Affix.VERSION = '3.3.5'; 
Affix.RESET = 'affix affix-top affix-bottom'; 
Affix.DEFAULTS = { 
offset: 0,
target: window}
; 
Affix.prototype.getState = function (scrollHeight, height, offsetTop, offsetBottom){ 
var scrollTop = this.$target.scrollTop(); 
var position = this.$element.offset(); 
var targetHeight = this.$target.height(); 
if (offsetTop != null  && this.affixed == 'top') return scrollTop < offsetTop? 'top': false ; 
if (this.affixed == 'bottom') { 
if (offsetTop != null ) return (scrollTop + this.unpin <= position.top)? false : 'bottom'; 
return (scrollTop + targetHeight <= scrollHeight - offsetBottom)? false : 'bottom'; 
} 
var initializing = this.affixed == null ; 
var colliderTop = initializing? scrollTop: position.top; 
var colliderHeight = initializing? targetHeight: height; 
if (offsetTop != null  && scrollTop <= offsetTop) return 'top'; 
if (offsetBottom != null  && (colliderTop + colliderHeight >= scrollHeight - offsetBottom)) return 'bottom'; 
return false ; 
} 
; 
Affix.prototype.getPinnedOffset = function (){ 
if (this.pinnedOffset) return this.pinnedOffset; 
this.$element.removeClass(Affix.RESET).addClass('affix'); 
var scrollTop = this.$target.scrollTop(); 
var position = this.$element.offset(); 
return (this.pinnedOffset = position.top - scrollTop); 
} 
; 
Affix.prototype.checkPositionWithEventLoop = function (){ 
_AN_Call_settimeout('setTimeout', window, $.proxy(this.checkPosition, this), 1); 
} 
; 
Affix.prototype.checkPosition = function (){ 
if (!this.$element.is(':visible')) return ; 
var height = this.$element.height(); 
var offset = this.options.offset; 
var offsetTop = offset.top; 
var offsetBottom = offset.bottom; 
var scrollHeight = Math.max($(document).height(), $(document.body).height()); 
if (typeof offset != 'object') offsetBottom = offsetTop = offset; 
if (typeof offsetTop == 'function') offsetTop = offset.top(this.$element); 
if (typeof offsetBottom == 'function') offsetBottom = offset.bottom(this.$element); 
var affix = this.getState(scrollHeight, height, offsetTop, offsetBottom); 
if (this.affixed != affix) { 
if (this.unpin != null ) this.$element.css('top', ''); 
var affixType = 'affix' + (affix? '-' + affix: ''); 
var e = $.Event(affixType + '.bs.affix'); 
this.$element.trigger(e); 
if (e.isDefaultPrevented()) return ; 
this.affixed = affix; 
this.unpin = affix == 'bottom'? this.getPinnedOffset(): null ; 
this.$element.removeClass(Affix.RESET).addClass(affixType).trigger(_AN_Call_replace('replace', affixType, 'affix', 'affixed') + '.bs.affix'); 
} 
if (affix == 'bottom') { 
this.$element.offset({ 
top: scrollHeight - height - offsetBottom}
); 
} 
} 
; 
function Plugin(option){ 
return this.each(function (){ 
var $this = $(this); 
var data = $this.data('bs.affix'); 
var options = typeof option == 'object' && option; 
if (!data) $this.data('bs.affix', (data = new Affix(this, options))); 
if (typeof option == 'string') data[option](); 
} 
); 
} 
var old = $.fn.affix; 
$.fn.affix = Plugin; 
$.fn.affix.Constructor = Affix; 
$.fn.affix.noConflict = function (){ 
$.fn.affix = old; 
return this; 
} 
; 
$(window).on('load', function (){ 
$('[data-spy="affix"]').each(function (){ 
var $spy = $(this); 
var data = $spy.data(); 
data.offset = data.offset || { 
}
; 
if (data.offsetBottom != null ) data.offset.bottom = data.offsetBottom; 
if (data.offsetTop != null ) data.offset.top = data.offsetTop; 
Plugin.call($spy, data); 
} 
); 
} 
); 
} 
(jQuery);