/*

 * jQuery appear plugin

 *

 * Copyright (c) 2012 Andrey Sidorov

 * licensed under MIT license.

 *

 * https://github.com/morr/jquery.appear/

 *

 * Version: 0.3.3

 */

(function(e){function u(){r=false;for(var n=0;n<t.length;n++){var i=e(t[n]).filter(function(){return e(this).is(":appeared")});i.trigger("appear",[i]);if(o){var s=o.not(i);s.trigger("disappear",[s])}o=i}}var t=[];var n=false;var r=false;var i={interval:250,force_process:false};var s=e(window);var o;e.expr[":"]["appeared"]=function(t){var n=e(t);if(!n.is(":visible")){return false}var r=s.scrollLeft();var i=s.scrollTop();var o=n.offset();var u=o.left;var a=o.top;if(a+n.height()>=i&&a+(n.data("appear-bottom-offset")||0)<=i+s.height()&&u+n.width()>=r&&u-(n.data("appear-left-offset")||0)<=r+s.width()){return true}else{return false}};e.fn.extend({appear:function(s){var o=e.extend({},i,s||{});var a=this.selector||this;if(!n){var f=function(){if(r){return}r=true;setTimeout(u,o.interval)};e(window).scroll(f).resize(f);n=true}if(o.force_process){setTimeout(u,o.interval)}t.push(a);return e(a)}});e.extend({force_appear:function(){if(n){u();return true}return false}})})(jQuery)