/*!
 * jQuery Unveil
 * A very lightweight jQuery plugin to lazy load images
 * http://luis-almeida.github.com/unveil
 *
 * Licensed under the MIT license.
 * Copyright 2013 Luís Almeida
 * https://github.com/luis-almeida
 */;(function($){$.fn.unveil=function(threshold,callback){var $w=$(window),th=threshold||100,mql=window.matchMedia("(max-width: 768px)"),mobile=mql.matches,attrib=mobile?"data-src-mobile":"data-src",bg=mobile?"data-bg-mobile":"data-bg",images=this,loaded;this.one("unveil",function(){var self=this;var bg_source=this.getAttribute(bg)?this.getAttribute(bg):this.getAttribute("data-bg");var source=bg_source?bg_source:this.getAttribute(attrib);source=source||this.getAttribute("data-src")||this.getAttribute("data-bg");if(source){var img=new Image();img.setAttribute("src",source);$(img).on('load',function(){if(bg_source){self.style.backgroundImage="url('"+source+"')";}else{self.setAttribute("src",source);}
if(typeof callback==="function")callback.call(self);});}else{if(typeof callback==="function")callback.call(self);}});function unveil(){var inview=images.filter(function(){var $e=$(this);if($e.is(":hidden"))return;var wt=$w.scrollTop(),wb=wt+$w.height(),et=$e.offset().top,eb=et+$e.height();return eb>=wt-th&&et<=wb+th;});loaded=inview.trigger("unveil");images=images.not(loaded);}
$w.on("scroll.unveil resize.unveil lookup.unveil",unveil);unveil();return this;};})(window.jQuery||window.Zepto);