Fix event target for Firefox.

This commit fixes a crucial bug in Firefox that was preventing the
proper loading of images.

bower.json

@@ -1,7 +1,7 @@
 {
   "name": "postpone",
   "main": "index.js",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "homepage": "https://github.com/lsvx/postpone",
   "authors": [
     "Lucas Serven <lserven@gmail.com>"

component.json

@@ -2,7 +2,7 @@
   "name": "postpone",
   "repo": "lsvx/postpone",
   "description": "A polyfill for postponing the loading of media.",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "keywords": ["postpone", "media", "resource", "priority", "download"],
   "dependencies": {},
   "development": {},

docs/Postpone.html

@@ -1386,7 +1386,7 @@ <h5>Parameters:</h5>
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="index.js.html">index.js</a>, <a href="index.js.html#line384">line 384</a>
+        <a href="index.js.html">index.js</a>, <a href="index.js.html#line386">line 386</a>
     </li></ul></dd>
 
 
@@ -2372,7 +2372,7 @@ <h2><a href="index.html">Index</a></h2><h3>Classes</h3><ul><li><a href="Postpone
 <br clear="both">
 
 <footer>
-    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Sun Oct 13 2013 02:31:32 GMT-0400 (EDT)
+    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Wed Oct 23 2013 19:50:06 GMT-0400 (EDT)
 </footer>
 
 <script> prettyPrint(); </script>

docs/global.html

@@ -164,7 +164,7 @@ <h2><a href="index.html">Index</a></h2><h3>Classes</h3><ul><li><a href="Postpone
 <br clear="both">
 
 <footer>
-    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Sun Oct 13 2013 02:31:32 GMT-0400 (EDT)
+    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Wed Oct 23 2013 19:50:06 GMT-0400 (EDT)
 </footer>
 
 <script> prettyPrint(); </script>

docs/index.html

@@ -54,7 +54,7 @@ <h2><a href="index.html">Index</a></h2><h3>Classes</h3><ul><li><a href="Postpone
 <br clear="both">
 
 <footer>
-    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Sun Oct 13 2013 02:31:32 GMT-0400 (EDT)
+    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Wed Oct 23 2013 19:50:06 GMT-0400 (EDT)
 </footer>
 
 <script> prettyPrint(); </script>

docs/index.js.html

@@ -279,7 +279,7 @@ <h1 class="page-title">Source: index.js</h1>
  * @returns this
  */
 Postpone.prototype.scrollHandler = function( e ) {
-    var scrollElement = e.srcElement,
+    var scrollElement = e.srcElement || e.target,
         elements = this.scrollElements[ scrollElement === window.document ? scrollElement = "window" : scrollElement.getAttribute( "data-id" ) ],
         element = {},
         scrolledIntoView = false;
@@ -337,7 +337,7 @@ <h1 class="page-title">Source: index.js</h1>
     var temp = el,
         o = 0;
     /** Iterate over all parents of el up to body to find the vertical offset. */
-    while ( temp && temp.tagName.toLowerCase() !== "body" ) {
+    while ( temp && temp.tagName.toLowerCase() !== "body" && temp.tagName.toLowerCase() !== "html" ) {
         o += temp.offsetTop;
         temp = temp.offsetParent;
     }
@@ -378,7 +378,9 @@ <h1 class="page-title">Source: index.js</h1>
     /** If no scroll element is specified, then assume the scroll element is the window. */
     scrollElement = scrollElement? scrollElement : "window";
 
-    if ( scrollElement === "window" )  scrollElement = document.body;
+    if ( scrollElement === "window" ) {
+        scrollElement = document.documentElement.scrollTop ? document.documentElement : document.body;
+    }
     /** Use clientHeight instead of window.innerHeight for compatability with ie8. */
     var viewPortHeight = document.documentElement.clientHeight,
         top = this.offsetTop( el ),
@@ -464,7 +466,7 @@ <h2><a href="index.html">Index</a></h2><h3>Classes</h3><ul><li><a href="Postpone
 <br clear="both">
 
 <footer>
-    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Sun Oct 13 2013 02:31:32 GMT-0400 (EDT)
+    Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.1</a> on Wed Oct 23 2013 19:50:06 GMT-0400 (EDT)
 </footer>
 
 <script> prettyPrint(); </script>

index.js

@@ -252,7 +252,7 @@ Postpone.prototype.stop = function() {
  * @returns this
  */
 Postpone.prototype.scrollHandler = function( e ) {
-    var scrollElement = e.srcElement,
+    var scrollElement = e.srcElement || e.target,
         elements = this.scrollElements[ scrollElement === window.document ? scrollElement = "window" : scrollElement.getAttribute( "data-id" ) ],
         element = {},
         scrolledIntoView = false;
@@ -310,7 +310,7 @@ Postpone.prototype.offsetTop = function( el ) {
     var temp = el,
         o = 0;
     /** Iterate over all parents of el up to body to find the vertical offset. */
-    while ( temp && temp.tagName.toLowerCase() !== "body" ) {
+    while ( temp && temp.tagName.toLowerCase() !== "body" && temp.tagName.toLowerCase() !== "html" ) {
         o += temp.offsetTop;
         temp = temp.offsetParent;
     }
@@ -351,7 +351,9 @@ Postpone.prototype.isInViewport = function( el, scrollElement ) {
     /** If no scroll element is specified, then assume the scroll element is the window. */
     scrollElement = scrollElement? scrollElement : "window";
 
-    if ( scrollElement === "window" )  scrollElement = document.body;
+    if ( scrollElement === "window" ) {
+        scrollElement = document.documentElement.scrollTop ? document.documentElement : document.body;
+    }
     /** Use clientHeight instead of window.innerHeight for compatability with ie8. */
     var viewPortHeight = document.documentElement.clientHeight,
         top = this.offsetTop( el ),

package.json

@@ -1,6 +1,6 @@
 {
   "name": "postpone",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "A polyfill for postponing the loading of media.",
   "main": "index.js",
   "directories": {