Fixed a firefox bug

docs/demo.js

@@ -150,12 +150,13 @@ function FizzyText(message) {
   var loop = function() {
 
     requestAnimationFrame(loop);
-    
+
     // Don't render if we don't see it.
     // Would be cleaner if I dynamically acquired the top of the canvas.
     if (document.body.scrollTop < height + 20) {
       render();
     }
+
   }
 
   // This calls the render function every 30 milliseconds.

src/DAT/GUI/ControllerString.js

@@ -28,7 +28,7 @@ DAT.GUI.ControllerString = function() {
 
   input.addEventListener('mousedown', function(e) {
     DAT.GUI.makeSelectable(input);
-  });
+  }, false);
 
   input.addEventListener('blur', function() {
     DAT.GUI.supressHotKeys = false;