diff --git a/src/event.js b/src/event.js
index cfee8af..20657a9 100644
--- a/src/event.js
+++ b/src/event.js
@@ -63,15 +63,14 @@ Event.Methods = (function() {
       
       var node          = event.target,
           type          = event.type,
-          currentTarget = event.currentTarget,
-          tagName       = currentTarget.tagName;
+          currentTarget = event.currentTarget;
       
-      if (currentTarget && tagName) {
+      if (currentTarget && currentTarget.tagName) {
         // Firefox screws up the "click" event when moving between radio buttons
         // via arrow keys. It also screws up the "load" and "error" events on images,
         // reporting the document as the target instead of the original image.
         if (type === 'load' || type === 'error' ||
-          (type === 'click' && tagName.toLowerCase() === 'input'
+          (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
             && currentTarget.type === 'radio'))
               node = currentTarget;
       }