// @source : https://github.com/imulus/retinajs
// @todo Update to new retina version.
!function(){function t(){}function e(t){return r.retinaImageSuffix+t}function i(t,i){if(this.path=t||"","undefined"!=typeof i&&null!==i)this.at_2x_path=i,this.perform_check=!1;else{if(void 0!==document.createElement){var n=document.createElement("a");n.href=this.path,n.pathname=n.pathname.replace(o,e),this.at_2x_path=n.href}else{var a=this.path.split("?");a[0]=a[0].replace(o,e),this.at_2x_path=a.join("?")}this.perform_check=!0}}function n(t){this.el=t,this.path=new i(this.el.getAttribute("src"),this.el.getAttribute("data-at2x"));var e=this;this.path.check_2x_variant(function(t){t&&e.swap()})}var a="undefined"==typeof exports?window:exports,r={retinaImageSuffix:"@2x",check_mime_type:!0,force_original_dimensions:!0,retina_mode:parseInt(wpexRetina.mode)};a.Retina=t,t.configure=function(t){null===t&&(t={});for(var e in t)t.hasOwnProperty(e)&&(r[e]=t[e])},t.init=function(t){null===t&&(t=a);var e=t.onload||function(){};t.onload=function(){var t,i,a=document.getElementsByTagName("img"),o=[];for(t=0;t<a.length;t+=1)i=a[t],1==r.retina_mode?i.getAttributeNode("data-no-retina")||o.push(new n(i)):2==r.retina_mode&&(i.getAttributeNode("data-retina-true")||i.getAttributeNode("data-at2x"))&&o.push(new n(i));e()}},t.isRetina=function(){var t="(-webkit-min-device-pixel-ratio: 1.5), (min--moz-device-pixel-ratio: 1.5), (-o-min-device-pixel-ratio: 3/2), (min-resolution: 1.5dppx)";return a.devicePixelRatio>1?!0:a.matchMedia&&a.matchMedia(t).matches?!0:!1};var o=/\.\w+$/;a.RetinaImagePath=i,i.confirmed_paths=[],i.prototype.is_external=function(){return!(!this.path.match(/^https?\:/i)||this.path.match("//"+document.domain))},i.prototype.check_2x_variant=function(t){var e,n=this;return this.is_external()?t(!1):this.perform_check||"undefined"==typeof this.at_2x_path||null===this.at_2x_path?this.at_2x_path in i.confirmed_paths?t(!0):(e=new XMLHttpRequest,e.open("HEAD",this.at_2x_path),e.onreadystatechange=function(){if(4!==e.readyState)return t(!1);if(e.status>=200&&e.status<=399){if(r.check_mime_type){var a=e.getResponseHeader("Content-Type");if(null===a||!a.match(/^image/i))return t(!1)}return i.confirmed_paths.push(n.at_2x_path),t(!0)}return t(!1)},e.send(),void 0):t(!0)},a.RetinaImage=n,n.prototype.swap=function(t){function e(){i.el.complete?(r.force_original_dimensions&&(i.el.setAttribute("width",i.el.offsetWidth),i.el.setAttribute("height",i.el.offsetHeight)),i.el.setAttribute("src",t)):setTimeout(e,5)}"undefined"==typeof t&&(t=this.path.at_2x_path);var i=this;e()},t.isRetina()&&t.init(a)}();