diff --git a/core/main/client/browser.js b/core/main/client/browser.js
index 2d32c686e..a380d29a0 100644
--- a/core/main/client/browser.js
+++ b/core/main/client/browser.js
@@ -27,6 +27,14 @@ beef.browser = {
         return window.navigator.userAgent.match(/Avant TriCore/) != null;
     },
 
+    /**
+     * Returns true if Iceweasel.
+     * @example: beef.browser.isI()
+     */
+    isI:function () {
+        return window.navigator.userAgent.match(/Iceweasel\/\d+\.\d/) != null;
+    },
+
     /**
      * Returns true if IE6.
      * @example: beef.browser.isIE6()