Fixes issue #435 - added missing comma in keysym.js

include/keysym.js

@@ -58,7 +58,7 @@ XK_KP_Up =                       0xff97,
 XK_KP_Right =                    0xff98,
 XK_KP_Down =                     0xff99,
 XK_KP_Prior =                    0xff9a,
-XK_KP_Page_Up =                  0xff9a
+XK_KP_Page_Up =                  0xff9a,
 XK_KP_Next =                     0xff9b,
 XK_KP_Page_Down =                0xff9b,
 XK_KP_End =                      0xff9c,