/*!
 * an jquery | zepto plugin for lazy loading images.
 * author -> jieyou
 * see https://github.com/jieyou/lazyload
 * use some tuupola's code https://github.com/tuupola/jquery_lazyload (bsd)
 * use component's throttle https://github.com/component/throttle (mit)
 */
!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):a(window.jquery||window.zepto)}(function(a){function g(){}function h(a,b){var e;return e=b._$container==d?("innerheight"in c?c.innerheight:d.height())+d.scrolltop():b._$container.offset().top+b._$container.height(),e<=a.offset().top-b.threshold}function i(b,e){var f;return f=e._$container==d?d.width()+(a.fn.scrollleft?d.scrollleft():c.pagexoffset):e._$container.offset().left+e._$container.width(),f<=b.offset().left-e.threshold}function j(a,b){var c;return c=b._$container==d?d.scrolltop():b._$container.offset().top,c>=a.offset().top+b.threshold+a.height()}function k(b,e){var f;return f=e._$container==d?a.fn.scrollleft?d.scrollleft():c.pagexoffset:e._$container.offset().left,f>=b.offset().left+e.threshold+b.width()}function l(a,b){var c=0;a.each(function(d){function g(){f.trigger("_lazyload_appear"),c=0}var f=a.eq(d);if(!(f.width()<=0&&f.height()<=0||"none"===f.css("display")))if(b.vertical_only)if(j(f,b));else if(h(f,b)){if(++c>b.failure_limit)return!1}else g();else if(j(f,b)||k(f,b));else if(h(f,b)||i(f,b)){if(++c>b.failure_limit)return!1}else g()})}function m(a){return a.filter(function(b){return!a.eq(b)._lazyload_loadstarted})}function n(a,b){function h(){f=0,g=+new date,e=a.apply(c,d),c=null,d=null}var c,d,e,f,g=0;return function(){c=this,d=arguments;var a=new date-g;return f||(a>=b?h():f=settimeout(h,b-a)),e}}var f,c=window,d=a(c),e={threshold:0,failure_limit:0,event:"scroll",effect:"show",effect_params:null,container:c,data_attribute:"original",data_srcset_attribute:"original-srcset",skip_invisible:!0,appear:g,load:g,vertical_only:!1,check_appear_throttle_time:300,url_rewriter_fn:g,no_fake_img_loader:!1,placeholder_data_img:"data:image/png;base64,ivborw0kggoaaaansuheugaaaaeaaaabcayaaaaffcsjaaaaaxnsr0iars4c6qaaaarnqu1baacxjwv8yquaaaajcehzcwaadsqaaa7eazurdhsaaaansurbvbhxyzh8+pb/aaffa0nnpuclaaaaaelftksuqmcc",placeholder_real_img:"http://ditu.baidu.cn/yyfm/lazyload/0.0.1/img/placeholder.png"};f=function(){var a=object.prototype.tostring;return function(b){return a.call(b).replace("[object ","").replace("]","")}}(),a.fn.hasownproperty("lazyload")||(a.fn.lazyload=function(b){var i,j,k,h=this;return a.isplainobject(b)||(b={}),a.each(e,function(g,h){var i=f(b[g]);-1!=a.inarray(g,["threshold","failure_limit","check_appear_throttle_time"])?"string"==i?b[g]=parseint(b[g],10):"number"!=i&&(b[g]=h):"container"==g?(b._$container=b.hasownproperty(g)?b[g]==c||b[g]==document?d:a(b[g]):d,delete b.container):!e.hasownproperty(g)||b.hasownproperty(g)&&i==f(e[g])||(b[g]=h)}),i="scroll"==b.event,k=0==b.check_appear_throttle_time?l:n(l,b.check_appear_throttle_time),j=i||"scrollstart"==b.event||"scrollstop"==b.event,h.each(function(c){var e=this,f=h.eq(c),i=f.attr("src"),k=f.attr("data-"+b.data_attribute),l=b.url_rewriter_fn==g?k:b.url_rewriter_fn.call(e,f,k),n=f.attr("data-"+b.data_srcset_attribute),o=f.is("img");return 1==f._lazyload_loadstarted||i==l?(f._lazyload_loadstarted=!0,h=m(h),void 0):(f._lazyload_loadstarted=!1,o&&!i&&f.one("error",function(){f.attr("src",b.placeholder_real_img)}).attr("src",b.placeholder_data_img),f.one("_lazyload_appear",function(){function i(){d&&f.hide(),o?(n&&f.attr("srcset",n),l&&f.attr("src",l)):f.css("background-image",'url("'+l+'")'),d&&f[b.effect].apply(f,c?b.effect_params:[]),h=m(h)}var d,c=a.isarray(b.effect_params);f._lazyload_loadstarted||(d="show"!=b.effect&&a.fn[b.effect]&&(!b.effect_params||c&&0==b.effect_params.length),b.appear!=g&&b.appear.call(e,f,h.length,b),f._lazyload_loadstarted=!0,b.no_fake_img_loader||n?(b.load!=g&&f.one("load",function(){b.load.call(e,f,h.length,b)}),i()):a("<img />").one("load",function(){i(),b.load!=g&&b.load.call(e,f,h.length,b)}).attr("src",l))}),j||f.on(b.event,function(){f._lazyload_loadstarted||f.trigger("_lazyload_appear")}),void 0)}),j&&b._$container.on(b.event,function(){k(h,b)}),d.on("resize load",function(){k(h,b)}),a(function(){k(h,b)}),this})});