diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 11b19ca4fec0cce1ba1a9276d2440a7bbd0d6201..4001cd397502e9926830cddcb86ad43c5573fa64 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -228,6 +228,7 @@ set(viewer_SOURCE_FILES
     llfloatersearch.cpp
     llfloatersellland.cpp
     llfloatersettingsdebug.cpp
+    llfloatersidepanelcontainer.cpp
     llfloatersidetraytab.cpp
     llfloatersnapshot.cpp
     llfloatersounddevices.cpp
@@ -791,6 +792,7 @@ set(viewer_HEADER_FILES
     llfloatersearch.h
     llfloatersellland.h
     llfloatersettingsdebug.h
+    llfloatersidepanelcontainer.h
     llfloatersidetraytab.h
     llfloatersnapshot.h
     llfloatersounddevices.h
diff --git a/indra/newview/llfloatersidepanelcontainer.cpp b/indra/newview/llfloatersidepanelcontainer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..54cdb574b336a067a19d6165dec8ce4e0da5b856
--- /dev/null
+++ b/indra/newview/llfloatersidepanelcontainer.cpp
@@ -0,0 +1,77 @@
+/** 
+ * @file llfloatersidepanelcontainer.cpp
+ * @brief LLFloaterSidePanelContainer class definition
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, 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
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llfloatersidepanelcontainer.h"
+
+// newview includes
+#include "llsidetraypanelcontainer.h"
+#include "lltransientfloatermgr.h"
+
+LLFloaterSidePanelContainer::LLFloaterSidePanelContainer(const LLSD& key, const Params& params)
+:	LLFloater(key, params)
+{
+	// Prevent transient floaters (e.g. IM windows) from hiding
+	// when this floater is clicked.
+	LLTransientFloaterMgr::getInstance()->addControlView(LLTransientFloaterMgr::GLOBAL, this);
+}
+
+LLFloaterSidePanelContainer::~LLFloaterSidePanelContainer()
+{
+	LLTransientFloaterMgr::getInstance()->removeControlView(LLTransientFloaterMgr::GLOBAL, this);
+}
+
+void LLFloaterSidePanelContainer::onOpen(const LLSD& key)
+{
+	getChild<LLPanel>("main_panel")->onOpen(key);
+}
+
+LLPanel* LLFloaterSidePanelContainer::openChildPanel(const std::string& panel_name, const LLSD& params)
+{
+	LLView* view = findChildView(panel_name, true);
+	if (!view) return NULL;
+
+	openFloater();
+
+	LLPanel* panel = NULL;
+
+	LLSideTrayPanelContainer* container = dynamic_cast<LLSideTrayPanelContainer*>(view->getParent());
+	if (container)
+	{
+		LLSD new_params = params;
+		new_params[LLSideTrayPanelContainer::PARAM_SUB_PANEL_NAME] = panel_name;
+		container->onOpen(new_params);
+
+		panel = container->getCurrentPanel();
+	}
+	else if (panel = dynamic_cast<LLPanel*>(view))
+	{
+		panel->onOpen(params);
+	}
+
+	return panel;
+}
diff --git a/indra/newview/llfloatersidepanelcontainer.h b/indra/newview/llfloatersidepanelcontainer.h
new file mode 100644
index 0000000000000000000000000000000000000000..37d65a1354484f6aee969ea4554cbf6588e59035
--- /dev/null
+++ b/indra/newview/llfloatersidepanelcontainer.h
@@ -0,0 +1,54 @@
+/** 
+ * @file llfloatersidepanelcontainer.h
+ * @brief LLFloaterSidePanelContainer class
+ *
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, 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_LLFLOATERSIDEPANELCONTAINER_H
+#define LL_LLFLOATERSIDEPANELCONTAINER_H
+
+#include "llfloater.h"
+
+/**
+ * Class LLFloaterSidePanelContainer
+ *
+ * Provides an interface for all former Side Tray panels.
+ *
+ * This class helps to make sure that clicking a floater containing the side panel
+ * doesn't make transient floaters (e.g. IM windows) hide, so that it's possible to
+ * drag an inventory item from My Inventory window to a docked IM window,
+ * i.e. share the item (see VWR-22891).
+ */
+class LLFloaterSidePanelContainer : public LLFloater
+{
+public:
+	LLFloaterSidePanelContainer(const LLSD& key, const Params& params = getDefaultParams());
+	~LLFloaterSidePanelContainer();
+
+	/*virtual*/ void onOpen(const LLSD& key);
+
+	LLPanel* openChildPanel(const std::string& panel_name, const LLSD& params);
+};
+
+#endif // LL_LLFLOATERSIDEPANELCONTAINER_H