From db8f87f53c8cad6a50bace3aeed045d1b28232bf Mon Sep 17 00:00:00 2001
From: Antonio Egizio <ase@statusnobilis.com>
Date: Tue, 8 Oct 2013 22:23:57 +0200
Subject: [PATCH] IE Compatibility fix - IE doesn't support add/remove
 EventListener, replaced with add/detach Event

---
 jsbn/rng.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/jsbn/rng.js b/jsbn/rng.js
index 2169874..244c2e4 100644
--- a/jsbn/rng.js
+++ b/jsbn/rng.js
@@ -21,15 +21,21 @@ if(rng_pool == null) {
   var onMouseMoveListener = function(ev) {
     this.count = this.count || 0;
     if (this.count >= 256 || rng_pptr >= rng_psize) {
-      window.removeEventListener("mousemove", onMouseMoveListener);
+      if (window.removeEventListener)
+        window.removeEventListener("mousemove", onMouseMoveListener);
+      else if (window.detachEvent)
+        window.detachEvent("onmousemove", onMouseMoveListener);
       return;
     }
     this.count += 1;
     var mouseCoordinates = ev.x + ev.y;
     rng_pool[rng_pptr++] = mouseCoordinates & 255;
   };
- 
-  window.addEventListener("mousemove", onMouseMoveListener);
+  if (window.addEventListener)
+    window.addEventListener("mousemove", onMouseMoveListener);
+  else if (window.attachEvent)
+    window.attachEvent("onmousemove", onMouseMoveListener);
+  
 }
 
 function rng_get_byte() {