Bug 707736 - Hide the cursor when it's motionless over a fullscreen video. r=dolske

toolkit/content/widgets/videocontrols.css

@@ -26,6 +26,10 @@
   text-decoration: none !important;
 }
 
+.controlsSpacer[hideCursor] {
+ cursor: none;
+}
+
 /* CSS Transitions
  *
  * These are overriden by the default theme; the rules here just 

toolkit/content/widgets/videocontrols.xml

@@ -619,6 +619,7 @@
                                 // If video hasn't shown anything yet, disable the controls.
                                 if (!this.firstFrameShown)
                                     this.startFadeOut(this.controlBar);
+                                this.controlsSpacer.removeAttribute("hideCursor");
                             }
                             break;
                         default:
@@ -900,8 +901,14 @@
                         // when we remove the attribute.
                         element.clientTop;
                         element.removeAttribute("fadeout");
+                        if (element.className == "controlBar")
+                            this.controlsSpacer.removeAttribute("hideCursor");
                     } else {
                         element.setAttribute("fadeout", true);
+                        if (element.className == "controlBar" && !this.hasError() &&
+                            document.mozFullScreenElement == this.video)
+                            this.controlsSpacer.setAttribute("hideCursor", true);
+
                     }
                 },