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diff --git a/indra/llui/llloadingindicator.h b/indra/llui/llloadingindicator.h
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+/** 
+ * @file llloadingindicator.h
+ * @brief Perpetual loading indicator
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLLOADINGINDICATOR_H
+#define LL_LLLOADINGINDICATOR_H
+
+#include "lluictrl.h"
+#include "lluiimage.h"
+
+///////////////////////////////////////////////////////////////////////////////
+// class LLLoadingIndicator
+///////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Perpetual loading indicator (a la MacOSX or YouTube)
+ * 
+ * Number of rotations per second can be overridden
+ * with the "images_per_sec" parameter.
+ * 
+ * Can start/stop spinning.
+ * 
+ * @see start()
+ * @see stop()
+ */
+class LLLoadingIndicator
+: public LLUICtrl
+{
+	LOG_CLASS(LLLoadingIndicator);
+public:
+
+	struct Images : public LLInitParam::Block<Images>
+	{
+		Multiple<LLUIImage*>	image;
+
+		Images()
+		:	image("image")
+		{}
+	};
+
+	struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
+	{
+		Optional<F32>				images_per_sec;
+		Optional<Atomic<Images> >	images;
+
+		Params()
+		:	images_per_sec("images_per_sec", 1.0f),
+			images("images")
+		{}
+	};
+
+	virtual ~LLLoadingIndicator() {}
+
+	// llview overrides
+	virtual void draw();
+
+	/**
+	 * Stop spinning.
+	 */
+	void stop();
+
+	/**
+	 * Start spinning.
+	 */
+	void start();
+
+	void reset() { mCurImageIdx = 0; }
+
+private:
+	LLLoadingIndicator(const Params&);
+	void initFromParams(const Params&);
+
+	friend class LLUICtrlFactory;
+
+	F32						mImagesPerSec;
+	S8						mCurImageIdx;
+	LLFrameTimer			mImageSwitchTimer;
+
+	std::vector<LLUIImagePtr> mImages;
+};
+
+#endif // LL_LLLOADINGINDICATOR_H