send(null) for FF2/3

lib/transports/xhr-multipart.js

@@ -22,7 +22,7 @@
 		this._xhr.onreadystatechange = function(){
 			if (self._xhr.readyState == 3) self._onData(self._xhr.responseText);
 		};
-		this._xhr.send();
+		this._xhr.send(null);
 	};
 	
 	XHRMultipart.check = function(){
@@ -33,4 +33,4 @@
 		return true;
 	};
 	
-})();
+})();

lib/transports/xhr-polling.js

@@ -47,7 +47,7 @@
         }
       }
     };
-		this._xhr.send();
+		this._xhr.send(null);
 	};
 
 	XHRPolling.check = function(){