(function(e){"use strict";Date.now=Date.now||function(){return+(new Date)},e.ias=function(t)
{function u(){var t;i.onChangePage(function(e,t,r){s&&s.setPage(e,r),n.onPageChange.call(this,e,r,t)});if(n.triggerPageThreshold>0)a();else if(e(n.next).attr("href")){var u=r.getCurrentScrollOffset(n.scrollContainer);E(function(){p(u)})}return s&&s.havePage()&&(l(),t=s.getPage(),r.forceScrollTop(function(){var n;t>1?(v(t),n=h(!0),e("html, body").scrollTop(n)):a()})),o}function a(){c(),n.scrollContainer.scroll(f)}function f(){var e,t;e=r.getCurrentScrollOffset(n.scrollContainer),t=h(),e>=t&&(m()>=n.triggerPageThreshold?(l(),E(function(){p(e)})):p(e))}function l(){n.scrollContainer.unbind("scroll",f)}function c(){e(n.pagination).hide()}function h(t){var r,i;return r=e(n.container).find(n.item).last(),r.size()===0?0:(i=r.offset().top+r.height(),t||(i+=n.thresholdMargin),i)}function p(t,r){var s;s=e(n.next).attr("href");if(!s)return n.noneleft&&e(n.container).find(n.item).last().after(n.noneleft),l();if(n.beforePageChange&&e.isFunction(n.beforePageChange)&&n.beforePageChange(t,s)===!1)return;i.pushPages(t,s),l(),y(),d(s,function(t,i){var o=n.onLoadItems.call(this,i),u;o!==!1&&(e(i).hide(),u=e(n.container).find(n.item).last(),u.after(i),e(i).fadeIn()),s=e(n.next,t).attr("href"),e(n.pagination).replaceWith(e(n.pagination,t)),b(),c(),s?a():l(),n.onRenderComplete.call(this,i),r&&r.call(this)})}function d(t,r,i){var s=[],o,u=Date.now(),a,f;i=i||n.loaderDelay,e.get(t,null,function(t){o=e(n.container,t).eq(0),0===o.length&&(o=e(t).filter(n.container).eq(0)),o&&o.find(n.item).each(function(){s.push(this)}),r&&(f=this,a=Date.now()-u,a<i?setTimeout(function(){r.call(f,t,s)},i-a):r.call(f,t,s))},"html")}function v(t){var n=h(!0);n>0&&p(n,function(){l(),i.getCurPageNum(n)+1<t?(v(t),e("html,body").animate({scrollTop:n},400,"swing")):(e("html,body").animate({scrollTop:n},1e3,"swing"),a())})}function m(){var e=r.getCurrentScrollOffset(n.scrollContainer);return i.getCurPageNum(e)}function g(){var t=e(".ias_loader");return t.size()===0&&(t=e('<div class="ias_loader">'+n.loader+"</div>"),t.hide()),t}function y(){var t=g(),r;n.customLoaderProc!==!1?n.customLoaderProc(t):(r=e(n.container).find(n.item).last(),r.after(t),t.fadeIn())}function b(){var e=g();e.remove()}function w(t){var r=e(".ias_trigger");return r.size()===0&&(r=e('<div class="ias_trigger"><a href="#">'+n.trigger+"</a></div>"),r.hide()),e("a",r).unbind("click").bind("click",function(){return S(),t.call(),!1}),r}function E(t){var r=w(t),i;n.customTriggerProc!==!1?n.customTriggerProc(r):(i=e(n.container).find(n.item).last(),i.after(r),r.fadeIn())}function S(){var e=w();e.remove()}var n=e.extend({},e.ias.defaults,t),r=new e.ias.util,i=new e.ias.paging(n.scrollContainer),s=n.history?new e.ias.history:!1,o=this;u()},e.ias.defaults={container:"#container",scrollContainer:e(window),item:".item",pagination:"#pagination",next:".next",noneleft:!1,loader:'<img src="images/loader.gif"/>',loaderDelay:600,triggerPageThreshold:3,trigger:"Load more items",thresholdMargin:0,history:!0,onPageChange:function(){},beforePageChange:function(){},onLoadItems:function(){},onRenderComplete:function(){},customLoaderProc:!1,customTriggerProc:!1},e.ias.util=function(){function i(){e(window).load(function(){t=!0})}var t=!1,n=!1,r=this;i(),this.forceScrollTop=function(i){e("html,body").scrollTop(0),n||(t?(i.call(),n=!0):setTimeout(function(){r.forceScrollTop(i)},1))},this.getCurrentScrollOffset=function(e){var t,n;return e.get(0)===window?t=e.scrollTop():t=e.offset().top,n=e.height(),t+n}},e.ias.paging=function(){function s(){e(window).scroll(o)}function o(){var t,s,o,f,l;t=i.getCurrentScrollOffset(e(window)),s=u(t),o=a(t),r!==s&&(f=o[0],l=o[1],n.call({},s,f,l)),r=s}function u(e){for(var n=t.length-1;n>0;n--)if(e>t[n][0])return n+1;return 1}function a(e){for(var n=t.length-1;n>=0;n--)if(e>t[n][0])return t[n];return null}var t=[[0,document.location.toString()]],n=function(){},r=1,i=new e.ias.util;s(),this.getCurPageNum=function(t){return t=t||i.getCurrentScrollOffset(e(window)),u(t)},this.onChangePage=function(e){n=e},this.pushPages=function(e,n){t.push([e,n])}},e.ias.history=function(){function n(){t=!!(window.history&&history.pushState&&history.replaceState),t=!1}var e=!1,t=!1;n(),this.setPage=function(e,t){this.updateState({page:e},"",t)},this.havePage=function(){return this.getState()!==!1},this.getPage=function(){var e;return this.havePage()?(e=this.getState(),e.page):1},this.getState=function(){var e,n,r;if(t){n=history.state;if(n&&n.ias)return n.ias}else{e=window.location.hash.substring(0,7)==="#/page/";if(e)return r=parseInt(window.location.hash.replace("#/page/",""),10),{page:r}}return!1},this.updateState=function(t,n,r){e?this.replaceState(t,n,r):this.pushState(t,n,r)},this.pushState=function(n,r,i){var s;t?history.pushState({ias:n},r,i):(s=n.page>0?"#/page/"+n.page:"",window.location.hash=s),e=!0},this.replaceState=function(e,n,r){t?history.replaceState({ias:e},n,r):this.pushState(e,n,r)}}})(jQuery);  
// next page 
$.ias({
	thresholdMargin: -100,
	triggerPageThreshold: 5, //载入5次后停止自动载入
	history: false,
	container: '#infinitescroll', //内容区域
	item: '.infinitescroll_li', //循环体
	pagination: '.pagebar', //分页条
	next: '.pagebar a.next', //下一页链接
	loader: '<div class="pagebar-loading">数据载入中...</div>', //载入过程中显示的内容
	trigger: '查看更多', //停止载入后显示的内容 .ias_trigger 、 .ias_trigger a
	onPageChange: function (pageNum, pageUrl, scrollOffset) {
		window._gaq && window._gaq.push(['_trackPageview', jQuery('<a/>').attr('href', pageUrl)[0].pathname.replace(/^[^\/]/, '/')]);
	}
});