Re-fixes #428 which was broken by commit 58ded70d

* Disable local cursor when the browser doesn't support data uri

include/display.js

@@ -88,7 +88,7 @@ var Display;
         // Determine browser support for setting the cursor via data URI scheme
         if (this._cursor_uri || this._cursor_uri === null ||
                 this._cursor_uri === undefined) {
-            this._cursor_uri = Util.browserSupportsCursorURIs(this._target);
+            this._cursor_uri = Util.browserSupportsCursorURIs();
         }
 
         Util.Debug("<< Display.constructor");

include/rfb.js

@@ -1265,6 +1265,7 @@ var RFB;
                 this._local_cursor = true;
             } else {
                 Util.Warn("Browser does not support local cursor");
+                this._display.disableLocalCursor();
             }
         }
     };