diff --git a/jni/NativeFormats/fbreader/src/bookmodel/BookReader.cpp b/jni/NativeFormats/fbreader/src/bookmodel/BookReader.cpp
index 069d2ac43..2df7c8cd8 100644
--- a/jni/NativeFormats/fbreader/src/bookmodel/BookReader.cpp
+++ b/jni/NativeFormats/fbreader/src/bookmodel/BookReader.cpp
@@ -247,9 +247,9 @@ void BookReader::addVideoEntry(const ZLVideoEntry &entry) {
 	}
 }
 
-void BookReader::addFBReaderSpecialEntry(const std::string &action, const std::map<std::string,std::string> &data) {
+void BookReader::addExtensionEntry(const std::string &action, const std::map<std::string,std::string> &data) {
 	if (myCurrentTextModel != 0) {
-		myCurrentTextModel->addFBReaderSpecialEntry(action, data);
+		myCurrentTextModel->addExtensionEntry(action, data);
 	}
 }
 
diff --git a/jni/NativeFormats/fbreader/src/bookmodel/BookReader.h b/jni/NativeFormats/fbreader/src/bookmodel/BookReader.h
index 8d1e20cf6..477f2c249 100644
--- a/jni/NativeFormats/fbreader/src/bookmodel/BookReader.h
+++ b/jni/NativeFormats/fbreader/src/bookmodel/BookReader.h
@@ -74,7 +74,7 @@ public:
 	void addImage(const std::string &id, shared_ptr<const ZLImage> image);
 
 	void addVideoEntry(const ZLVideoEntry &entry);
-	void addFBReaderSpecialEntry(const std::string &action, const std::map<std::string,std::string> &data);
+	void addExtensionEntry(const std::string &action, const std::map<std::string,std::string> &data);
 
 	void beginContentsParagraph(int referenceNumber = -1);
 	void endContentsParagraph();
diff --git a/jni/NativeFormats/fbreader/src/formats/xhtml/XHTMLReader.cpp b/jni/NativeFormats/fbreader/src/formats/xhtml/XHTMLReader.cpp
index a86e27033..4b43b076c 100644
--- a/jni/NativeFormats/fbreader/src/formats/xhtml/XHTMLReader.cpp
+++ b/jni/NativeFormats/fbreader/src/formats/xhtml/XHTMLReader.cpp
@@ -543,7 +543,7 @@ void XHTMLTagPreAction::doAtEnd(XHTMLReader &reader) {
 }
 
 void XHTMLTagOpdsAction::doAtStart(XHTMLReader &reader, const char **xmlattributes) {
-	bookReader(reader).addFBReaderSpecialEntry("opds", reader.attributeMap(xmlattributes));
+	bookReader(reader).addExtensionEntry("opds", reader.attributeMap(xmlattributes));
 }
 
 void XHTMLTagOpdsAction::doAtEnd(XHTMLReader &reader) {
diff --git a/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.cpp b/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.cpp
index a5b344a22..2e9763c8e 100644
--- a/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.cpp
+++ b/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.cpp
@@ -385,7 +385,7 @@ void ZLTextModel::addVideoEntry(const ZLVideoEntry &entry) {
 	++myParagraphLengths.back();
 }
 
-void ZLTextModel::addFBReaderSpecialEntry(const std::string &action, const std::map<std::string,std::string> &data) {
+void ZLTextModel::addExtensionEntry(const std::string &action, const std::map<std::string,std::string> &data) {
 	std::size_t fullLength = 2;                                      // entry type + map size
 	fullLength += 2 + ZLUnicodeUtil::utf8Length(action) * 2;         // action name
 	for (std::map<std::string,std::string>::const_iterator it = data.begin(); it != data.end(); ++it) {
@@ -394,7 +394,7 @@ void ZLTextModel::addFBReaderSpecialEntry(const std::string &action, const std::
 	}
 
 	myLastEntryStart = myAllocator->allocate(fullLength);
-	*myLastEntryStart = ZLTextParagraphEntry::FBREADER_SPECIAL;
+	*myLastEntryStart = ZLTextParagraphEntry::EXTENSION_ENTRY;
 	*(myLastEntryStart + 1) = data.size();
 
 	char *p = myLastEntryStart + 2;
diff --git a/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.h b/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.h
index 749e34349..3caf48768 100644
--- a/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.h
+++ b/jni/NativeFormats/zlibrary/text/src/model/ZLTextModel.h
@@ -78,7 +78,7 @@ public:
 	void addFixedHSpace(unsigned char length);
 	void addBidiReset();
 	void addVideoEntry(const ZLVideoEntry &entry);
-	void addFBReaderSpecialEntry(const std::string &action, const std::map<std::string,std::string> &data);
+	void addExtensionEntry(const std::string &action, const std::map<std::string,std::string> &data);
 
 	void flush();
 
diff --git a/jni/NativeFormats/zlibrary/text/src/model/ZLTextParagraph.h b/jni/NativeFormats/zlibrary/text/src/model/ZLTextParagraph.h
index 902ce17f9..3bdca6b5a 100644
--- a/jni/NativeFormats/zlibrary/text/src/model/ZLTextParagraph.h
+++ b/jni/NativeFormats/zlibrary/text/src/model/ZLTextParagraph.h
@@ -48,7 +48,7 @@ public:
 		RESET_BIDI_ENTRY = 9,
 		AUDIO_ENTRY = 10,
 		VIDEO_ENTRY = 11,
-		FBREADER_SPECIAL = 12,
+		EXTENSION_ENTRY = 12,
 	};
 
 protected:
@@ -154,10 +154,10 @@ private:
 	ResetBidiEntry();
 };
 
-class FBReaderSpecialEntry : public ZLTextParagraphEntry {
+class ExtensionEntry : public ZLTextParagraphEntry {
 
 public:
-	~FBReaderSpecialEntry();
+	~ExtensionEntry();
 	const std::string &action() const;
 	const std::string &data() const;
 
@@ -269,9 +269,9 @@ inline short ImageEntry::vOffset() const { return myVOffset; }
 
 inline ResetBidiEntry::ResetBidiEntry() {}
 
-inline FBReaderSpecialEntry::~FBReaderSpecialEntry() {}
-inline const std::string &FBReaderSpecialEntry::action() const { return myAction; }
-inline const std::string &FBReaderSpecialEntry::data() const { return myData; }
+inline ExtensionEntry::~ExtensionEntry() {}
+inline const std::string &ExtensionEntry::action() const { return myAction; }
+inline const std::string &ExtensionEntry::data() const { return myData; }
 
 inline ZLTextParagraph::ZLTextParagraph() : myEntryNumber(0) {}
 inline ZLTextParagraph::~ZLTextParagraph() {}
diff --git a/src/org/geometerplus/zlibrary/text/view/BookElementsHolder.java b/src/org/geometerplus/fbreader/fbreader/BookElementManager.java
similarity index 88%
rename from src/org/geometerplus/zlibrary/text/view/BookElementsHolder.java
rename to src/org/geometerplus/fbreader/fbreader/BookElementManager.java
index cc960a465..3b48b8874 100644
--- a/src/org/geometerplus/zlibrary/text/view/BookElementsHolder.java
+++ b/src/org/geometerplus/fbreader/fbreader/BookElementManager.java
@@ -17,23 +17,24 @@
  * 02110-1301, USA.
  */
 
-package org.geometerplus.zlibrary.text.view;
+package org.geometerplus.fbreader.fbreader;
 
 import java.io.InputStream;
 import java.io.IOException;
 import java.util.*;
 
 import org.geometerplus.zlibrary.core.network.*;
+import org.geometerplus.zlibrary.text.view.*;
 
 import org.geometerplus.fbreader.network.opds.*;
 
-class BookElementsHolder {
+class BookElementManager extends ExtensionElementManager {
 	private final Runnable myScreenRefresher;
 	private final Map<Map<String,String>,List<BookElement>> myCache =
 		new HashMap<Map<String,String>,List<BookElement>>();
 	private Timer myTimer;
 
-	BookElementsHolder(final ZLTextView view) {
+	BookElementManager(final ZLTextView view) {
 		myScreenRefresher = new Runnable() {
 			public void run() {
 				view.Application.getViewWidget().reset();
@@ -42,7 +43,12 @@ class BookElementsHolder {
 		};
 	}
 
-	synchronized List<BookElement> getElements(Map<String,String> data) {
+	@Override
+	protected synchronized List<BookElement> getElements(String type, Map<String,String> data) {
+		if (!"opds".equals(type)) {
+			return Collections.emptyList();
+		}
+
 		List<BookElement> elements = myCache.get(data);
 		if (elements == null) {
 			try {
diff --git a/src/org/geometerplus/fbreader/fbreader/FBView.java b/src/org/geometerplus/fbreader/fbreader/FBView.java
index 0419b2982..d215d9887 100644
--- a/src/org/geometerplus/fbreader/fbreader/FBView.java
+++ b/src/org/geometerplus/fbreader/fbreader/FBView.java
@@ -40,6 +40,7 @@ import org.geometerplus.fbreader.fbreader.options.*;
 public final class FBView extends ZLTextView {
 	private final FBReaderApp myReader;
 	private final ViewOptions myViewOptions;
+	private final BookElementManager myBookElementManager = new BookElementManager(this);
 
 	FBView(FBReaderApp reader) {
 		super(reader);
@@ -783,4 +784,9 @@ public final class FBView extends ZLTextView {
 		super.onScrollingFinished(pageIndex);
 		myReader.storePosition();
 	}
+
+	@Override
+	protected ExtensionElementManager getExtensionManager() {
+		return myBookElementManager;
+	}
 }
diff --git a/src/org/geometerplus/zlibrary/text/model/FBReaderSpecialEntry.java b/src/org/geometerplus/zlibrary/text/model/ExtensionEntry.java
similarity index 85%
rename from src/org/geometerplus/zlibrary/text/model/FBReaderSpecialEntry.java
rename to src/org/geometerplus/zlibrary/text/model/ExtensionEntry.java
index 84d21bd24..16983d1b0 100644
--- a/src/org/geometerplus/zlibrary/text/model/FBReaderSpecialEntry.java
+++ b/src/org/geometerplus/zlibrary/text/model/ExtensionEntry.java
@@ -21,11 +21,11 @@ package org.geometerplus.zlibrary.text.model;
 
 import java.util.Map;
 
-public class FBReaderSpecialEntry {
+public class ExtensionEntry {
 	public final String Type;
 	public final Map<String,String> Data;
 
-	FBReaderSpecialEntry(String type, Map<String,String> data) {
+	ExtensionEntry(String type, Map<String,String> data) {
 		Type = type;
 		Data = data;
 	}
@@ -35,10 +35,10 @@ public class FBReaderSpecialEntry {
 		if (this == other) {
 			return true;
 		}
-		if (!(other instanceof FBReaderSpecialEntry)) {
+		if (!(other instanceof ExtensionEntry)) {
 			return false;
 		}
-		final FBReaderSpecialEntry entry = (FBReaderSpecialEntry)other;
+		final ExtensionEntry entry = (ExtensionEntry)other;
 		return Type.equals(entry.Type) && Data.equals(entry.Data);
 	}
 
diff --git a/src/org/geometerplus/zlibrary/text/model/ZLTextParagraph.java b/src/org/geometerplus/zlibrary/text/model/ZLTextParagraph.java
index 87355ac21..6a3b1c6c9 100644
--- a/src/org/geometerplus/zlibrary/text/model/ZLTextParagraph.java
+++ b/src/org/geometerplus/zlibrary/text/model/ZLTextParagraph.java
@@ -32,7 +32,7 @@ public interface ZLTextParagraph {
 		byte RESET_BIDI = 9;
 		byte AUDIO = 10;
 		byte VIDEO = 11;
-		byte FBREADER_SPECIAL = 12;
+		byte EXTENSION = 12;
 	}
 
 	interface EntryIterator {
@@ -50,7 +50,7 @@ public interface ZLTextParagraph {
 
 		ZLImageEntry getImageEntry();
 		ZLVideoEntry getVideoEntry();
-		FBReaderSpecialEntry getFBReaderSpecialEntry();
+		ExtensionEntry getExtensionEntry();
 		ZLTextStyleEntry getStyleEntry();
 
 		short getFixedHSpaceLength();
diff --git a/src/org/geometerplus/zlibrary/text/model/ZLTextPlainModel.java b/src/org/geometerplus/zlibrary/text/model/ZLTextPlainModel.java
index 01989db8f..a3e6486b6 100644
--- a/src/org/geometerplus/zlibrary/text/model/ZLTextPlainModel.java
+++ b/src/org/geometerplus/zlibrary/text/model/ZLTextPlainModel.java
@@ -70,8 +70,8 @@ public class ZLTextPlainModel implements ZLTextModel, ZLTextStyleEntry.Feature {
 		// VideoEntry
 		private ZLVideoEntry myVideoEntry;
 
-		// FBReaderSpecialEntry
-		private FBReaderSpecialEntry myFBReaderSpecialEntry;
+		// ExtensionEntry
+		private ExtensionEntry myExtensionEntry;
 
 		// StyleEntry
 		private ZLTextStyleEntry myStyleEntry;
@@ -125,8 +125,8 @@ public class ZLTextPlainModel implements ZLTextModel, ZLTextStyleEntry.Feature {
 			return myVideoEntry;
 		}
 
-		public FBReaderSpecialEntry getFBReaderSpecialEntry() {
-			return myFBReaderSpecialEntry;
+		public ExtensionEntry getExtensionEntry() {
+			return myExtensionEntry;
 		}
 
 		public ZLTextStyleEntry getStyleEntry() {
@@ -272,7 +272,7 @@ public class ZLTextPlainModel implements ZLTextModel, ZLTextStyleEntry.Feature {
 					}
 					break;
 				}
-				case ZLTextParagraph.Entry.FBREADER_SPECIAL:
+				case ZLTextParagraph.Entry.EXTENSION:
 				{
 					final short kindLength = (short)data[dataOffset++];
 					final String kind = new String(data, dataOffset, kindLength);
@@ -288,7 +288,7 @@ public class ZLTextPlainModel implements ZLTextModel, ZLTextStyleEntry.Feature {
 						map.put(key, new String(data, dataOffset, valueLength));
 						dataOffset += valueLength;
 					}
-					myFBReaderSpecialEntry = new FBReaderSpecialEntry(kind, map);
+					myExtensionEntry = new ExtensionEntry(kind, map);
 					break;
 				}
 			}
diff --git a/src/org/geometerplus/zlibrary/text/view/BookElement.java b/src/org/geometerplus/zlibrary/text/view/BookElement.java
index fca341492..a2d281cd9 100644
--- a/src/org/geometerplus/zlibrary/text/view/BookElement.java
+++ b/src/org/geometerplus/zlibrary/text/view/BookElement.java
@@ -30,7 +30,7 @@ public final class BookElement extends ZLTextElement {
 	private OPDSBookItem myItem;
 	private NetworkImage myCover;
 
-	void setData(OPDSBookItem item) {
+	public void setData(OPDSBookItem item) {
 		final String bookUrl = item.getUrl(UrlInfo.Type.Book);
 		String coverUrl = item.getUrl(UrlInfo.Type.Image);
 		if (coverUrl == null) {
diff --git a/src/org/geometerplus/zlibrary/text/view/ExtensionElementManager.java b/src/org/geometerplus/zlibrary/text/view/ExtensionElementManager.java
new file mode 100644
index 000000000..f64abe19a
--- /dev/null
+++ b/src/org/geometerplus/zlibrary/text/view/ExtensionElementManager.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2007-2014 Geometer Plus <contact@geometerplus.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+package org.geometerplus.zlibrary.text.view;
+
+import java.util.List;
+import java.util.Map;
+
+import org.geometerplus.zlibrary.text.model.ExtensionEntry;
+
+public abstract class ExtensionElementManager {
+	final List<BookElement> getElements(ExtensionEntry entry) {
+		return getElements(entry.Type, entry.Data);
+	}
+
+	protected abstract List<BookElement> getElements(String type, Map<String,String> data);
+}
diff --git a/src/org/geometerplus/zlibrary/text/view/ZLTextParagraphCursor.java b/src/org/geometerplus/zlibrary/text/view/ZLTextParagraphCursor.java
index 78762c49c..bd794a476 100644
--- a/src/org/geometerplus/zlibrary/text/view/ZLTextParagraphCursor.java
+++ b/src/org/geometerplus/zlibrary/text/view/ZLTextParagraphCursor.java
@@ -108,14 +108,9 @@ public final class ZLTextParagraphCursor {
 					case ZLTextParagraph.Entry.VIDEO:
 						elements.add(new ZLTextVideoElement(it.getVideoEntry().sources()));
 						break;
-					case ZLTextParagraph.Entry.FBREADER_SPECIAL:
-					{
-						final FBReaderSpecialEntry entry = it.getFBReaderSpecialEntry();
-						if ("opds".equals(entry.Type)) {
-							elements.addAll(myView.Holder.getElements(entry.Data));
-						}
+					case ZLTextParagraph.Entry.EXTENSION:
+						elements.addAll(myView.getExtensionManager().getElements(it.getExtensionEntry()));
 						break;
-					}
 					case ZLTextParagraph.Entry.STYLE_CSS:
 					case ZLTextParagraph.Entry.STYLE_OTHER:
 						elements.add(new ZLTextStyleElement(it.getStyleEntry()));
diff --git a/src/org/geometerplus/zlibrary/text/view/ZLTextView.java b/src/org/geometerplus/zlibrary/text/view/ZLTextView.java
index 1a77ee88d..43427a37a 100644
--- a/src/org/geometerplus/zlibrary/text/view/ZLTextView.java
+++ b/src/org/geometerplus/zlibrary/text/view/ZLTextView.java
@@ -68,8 +68,6 @@ public abstract class ZLTextView extends ZLTextViewBase {
 
 	private final ZLTextParagraphCursorCache myCursorCache = new ZLTextParagraphCursorCache();
 
-	final BookElementsHolder Holder = new BookElementsHolder(this);
-
 	public ZLTextView(ZLApplication application) {
 		super(application);
 	}
@@ -1887,4 +1885,6 @@ public abstract class ZLTextView extends ZLTextViewBase {
 		}
 		return result;
 	}
+
+	protected abstract ExtensionElementManager getExtensionManager();
 }