(t=>{t.fn.bsf_appear=function(p,e){let h=t.extend({data:void 0,one:!0,accX:0,accY:0},e);return this.each(function(){let l=t(this);if(l.bsf_appeared=!1,p){let i=t(window),a=function(){var e,a,p,t,f,r,s,n,c,o;l.is(":visible")&&(e=i.scrollLeft(),a=i.scrollTop(),p=(t=l.offset()).left,t=t.top,f=h.accX,r=h.accY,s=l.height(),n=i.height(),c=l.width(),o=i.width(),a<=t+s+r)&&t<=a+n+r&&e<=p+c+f&&p<=e+o+f?l.bsf_appeared||l.trigger("bsf_appear",h.data):l.bsf_appeared=!1};var e=function(){var e;l.bsf_appeared=!0,h.one&&(i.off("scroll",a),0<=(e=t.inArray(a,t.fn.bsf_appear.checks)))&&t.fn.bsf_appear.checks.splice(e,1),p.apply(this,arguments)};h.one?l.one("bsf_appear",h.data,e):l.bind("bsf_appear",h.data,e),i.on("scroll",a),t.fn.bsf_appear.checks.push(a),a()}else l.trigger("bsf_appear",h.data)})},t.extend(t.fn.bsf_appear,{checks:[],timeout:null,checkAll(){let e=t.fn.bsf_appear.checks.length;if(0<e)for(;e--;)t.fn.bsf_appear.checks[e]()},run(){t.fn.bsf_appear.timeout&&clearTimeout(t.fn.bsf_appear.timeout),t.fn.bsf_appear.timeout=setTimeout(t.fn.bsf_appear.checkAll,20)}}),t.each(["append","prepend","after","before","attr","removeAttr","addClass","removeClass","toggleClass","remove","css","show","hide"],function(e,a){let p=t.fn[a];p&&(t.fn[a]=function(){var e=p.apply(this,arguments);return t.fn.bsf_appear.run(),e})})})(jQuery);