add load event

dist/echo.js

@@ -45,8 +45,10 @@ window.Echo = (function (window, document, undefined) {
 
     if (document.addEventListener) {
       window.addEventListener('scroll', _throttle, false);
+      window.addEventListener('load', _throttle, false);
     } else {
       window.attachEvent('onscroll', _throttle);
+      window.attachEvent('onload', _throttle);
     }
   };
 

dist/echo.min.js

@@ -5,4 +5,4 @@
  *  by Todd Motto: http://toddmotto.com
  *  Copyright. MIT licensed.
  */
-window.Echo=function(a,b){"use strict";var c,d,e,f=[],g=function(d){var e=d.getBoundingClientRect();return(e.top>=0&&e.left>=0&&e.top)<=(a.innerHeight||b.documentElement.clientHeight)+parseInt(c)},h=function(){for(var a=f.length;a--;){var b=f[a];g(b)&&(b.src=b.getAttribute("data-echo"),f.splice(a,1))}},i=function(){clearTimeout(e),e=setTimeout(h,d)},j=function(e){var g=b.querySelectorAll("[data-echo]"),h=e||{};c=h.offset||0,d=h.throttle||250;for(var j=0;j<g.length;j++)f.push(g[j]);i(),b.addEventListener?a.addEventListener("scroll",i,!1):a.attachEvent("onscroll",i)};return{init:j,render:i}}(window,document);
+window.Echo=function(a,b){"use strict";var c,d,e,f=[],g=function(d){var e=d.getBoundingClientRect();return(e.top>=0&&e.left>=0&&e.top)<=(a.innerHeight||b.documentElement.clientHeight)+parseInt(c)},h=function(){for(var a=f.length;a--;){var b=f[a];g(b)&&(b.src=b.getAttribute("data-echo"),f.splice(a,1))}},i=function(){clearTimeout(e),e=setTimeout(h,d)},j=function(e){var g=b.querySelectorAll("[data-echo]"),h=e||{};c=h.offset||0,d=h.throttle||250;for(var j=0;j<g.length;j++)f.push(g[j]);i(),b.addEventListener?(a.addEventListener("scroll",i,!1),a.addEventListener("load",i,!1)):(a.attachEvent("onscroll",i),a.attachEvent("onload",i))};return{init:j,render:i}}(window,document);

src/echo.js

@@ -38,8 +38,10 @@ window.Echo = (function (window, document, undefined) {
 
     if (document.addEventListener) {
       window.addEventListener('scroll', _throttle, false);
+      window.addEventListener('load', _throttle, false);
     } else {
       window.attachEvent('onscroll', _throttle);
+      window.attachEvent('onload', _throttle);
     }
   };