diff --git a/build/js/ox.ui.js b/build/js/ox.ui.js
index 214b1469..57352b71 100644
--- a/build/js/ox.ui.js
+++ b/build/js/ox.ui.js
@@ -454,10 +454,30 @@ requires
 
         $(function() {
             // fixme: how to do this better?
-            if ($.browser.safari) {
-                $document.keydown(keypress);                
-            } else {
+            // in firefox, keypress doesn't fire for up/down
+            // if the cursor is at the start/end of an input element
+            if ($.browser.mozilla) {
                 $document.keypress(keypress);
+                $document.keydown(function(event) {
+                    var $element = $("input:focus");
+                    if ($element.length) {
+                        console.log("@", $element[0].selectionStart, $element[0].selectionEnd)
+                        if (
+                            (
+                                keyNames[event.keyCode] == "up" &&
+                                $element[0].selectionStart + $element[0].selectionEnd == 0
+                            ) || (
+                                keyNames[event.keyCode] == "down" &&
+                                $element[0].selectionStart == $element.val().length &&
+                                $element[0].selectionEnd == $element.val().length
+                            )
+                        ) {
+                            keypress(event);
+                        }
+                    }
+                });                
+            } else {
+                $document.keydown(keypress);                
             }
         });
         function keypress(event) {