diff --git a/Makefile b/Makefile
index edfc21dc9..c276a1a2c 100644
--- a/Makefile
+++ b/Makefile
@@ -16,9 +16,10 @@ TTF_FONTS_DIR=$(MUPDFDIR)/fonts
 
 # set this to your ARM cross compiler:
 
-CC:=arm-unknown-linux-gnueabi-gcc
-CXX:=arm-unknown-linux-gnueabi-g++
-HOST:=arm-unknown-linux-gnueabi
+HOST:=arm-none-linux-gnueabi
+CC:=$(HOST)-gcc
+CXX:=$(HOST)-g++
+STRIP:=$(HOST)-strip
 ifdef SBOX_UNAME_MACHINE
 	CC:=gcc
 	CXX:=g++
@@ -26,11 +27,18 @@ endif
 HOSTCC:=gcc
 HOSTCXX:=g++
 
-CFLAGS:=-O3
+CFLAGS:=-O3 $(SYSROOT)
+CXXFLAGS:=-O3 $(SYSROOT)
+LDFLAGS:= $(SYSROOT)
 ARM_CFLAGS:=-march=armv6
 # use this for debugging:
 #CFLAGS:=-O0 -g
 
+DYNAMICLIBSTDCPP:=-lstdc++
+ifdef STATICLIBSTDCPP
+	DYNAMICLIBSTDCPP:=
+endif
+
 # you can configure an emulation for the (eink) framebuffer here.
 # the application won't use the framebuffer (and the special e-ink ioctls)
 # in that case.
@@ -79,7 +87,7 @@ LUALIB := $(LUADIR)/src/liblua.a
 all:kpdfview
 
 kpdfview: kpdfview.o einkfb.o pdf.o blitbuffer.o drawcontext.o input.o util.o ft.o lfs.o $(MUPDFLIBS) $(THIRDPARTYLIBS) $(LUALIB) djvu.o $(DJVULIBS) cre.o $(CRENGINELIBS)
-	$(CC) -lm -ldl -lpthread $(EMU_LDFLAGS) -lstdc++ \
+	$(CC) -lm -ldl -lpthread $(EMU_LDFLAGS) $(DYNAMICLIBSTDCPP) \
 		kpdfview.o \
 		einkfb.o \
 		pdf.o \
@@ -96,6 +104,7 @@ kpdfview: kpdfview.o einkfb.o pdf.o blitbuffer.o drawcontext.o input.o util.o ft
 		$(DJVULIBS) \
 		cre.o \
 		$(CRENGINELIBS) \
+		$(STATICLIBSTDCPP) \
 		-o kpdfview
 
 slider_watcher: slider_watcher.c
@@ -192,13 +201,15 @@ VERSION?=$(shell git rev-parse --short HEAD)
 customupdate: all
 	# ensure that build binary is for ARM
 	file kpdfview | grep ARM || exit 1
+	$(STRIP) --strip-unneeded kpdfview
+	-rm kindlepdfviewer-$(VERSION).zip
 	rm -Rf $(INSTALL_DIR)
 	mkdir $(INSTALL_DIR)
 	cp -p README.TXT COPYING kpdfview *.lua $(INSTALL_DIR)
 	mkdir $(INSTALL_DIR)/data
 	cp -rpL data/*.css $(INSTALL_DIR)/data
-	cp -rp fonts $(INSTALL_DIR)
-	mkdir -p $(INSTALL_DIR)/fonts/host
-	zip -r kindlepdfviewer-$(VERSION).zip $(INSTALL_DIR) launchpad/
+	cp -rpL fonts $(INSTALL_DIR)
+	mkdir $(INSTALL_DIR)/fonts/host
+	zip -9 -r kindlepdfviewer-$(VERSION).zip $(INSTALL_DIR) launchpad/
 	rm -Rf $(INSTALL_DIR)
 	@echo "copy kindlepdfviewer-$(VERSION).zip to /mnt/us/customupdates and install with shift+shift+I"
diff --git a/blitbuffer.c b/blitbuffer.c
index 2294b8d19..123b9cb55 100644
--- a/blitbuffer.c
+++ b/blitbuffer.c
@@ -423,6 +423,67 @@ static int invertRect(lua_State *L) {
 	return 0;
 }
 
+static int dimRect(lua_State *L) {
+	BlitBuffer *dst = (BlitBuffer*) luaL_checkudata(L, 1, "blitbuffer");
+	int x = luaL_checkint(L, 2);
+	int y = luaL_checkint(L, 3);
+	int w = luaL_checkint(L, 4);
+	int h = luaL_checkint(L, 5);
+	uint8_t *dstptr;
+
+	int cy, cx;
+	if(w <= 0 || h <= 0 || x >= dst->w || y >= dst->h) {
+		return 0;
+	}
+	if(x + w > dst->w) {
+		w = dst->w - x;
+	}
+	if(y + h > dst->h) {
+		h = dst->h - y;
+	}
+
+	if(x & 1) {
+		/* This will dimm the leftmost column
+		 * in the case when x is odd. After this,
+		 * x will become even. */
+		dstptr = (uint8_t*)(dst->data + 
+				y * dst->pitch + 
+				x / 2);
+		for(cy = 0; cy < h; cy++) {
+			int px = *dstptr & 0x0F;
+			*dstptr &= 0xF0 | px >> 1;
+			dstptr += dst->pitch;
+		}
+		x++;
+		w--;
+	}
+	dstptr = (uint8_t*)(dst->data + 
+			y * dst->pitch + 
+			x / 2);
+	for(cy = 0; cy < h; cy++) {
+		for(cx = 0; cx < w/2; cx++) {
+			*(dstptr+cx) =
+				*(dstptr+cx) >> 1 & 0xF0 |
+				*(dstptr+cx) & 0x0F >> 1;
+		}
+		dstptr += dst->pitch;
+	}
+	if(w & 1) {
+		/* This will dimm the rightmost column 
+		 * in the case when (w & 1) && !(x & 1) or
+		 * !(w & 1) && (x & 1). */
+		dstptr = (uint8_t*)(dst->data + 
+				y * dst->pitch + 
+				(x + w) / 2);
+		for(cy = 0; cy < h; cy++) {
+			int px = *dstptr & 0xF0;
+			*dstptr &= 0x0F | ( px >> 1 & 0xF0 );
+			dstptr += dst->pitch;
+		}
+	}
+	return 0;
+}
+
 static const struct luaL_Reg blitbuffer_func[] = {
 	{"new", newBlitBuffer},
 	{NULL, NULL}
@@ -436,6 +497,7 @@ static const struct luaL_Reg blitbuffer_meth[] = {
 	{"blitFullFrom", blitFullToBuffer},
 	{"paintRect", paintRect},
 	{"invertRect", invertRect},
+	{"dimRect", dimRect},
 	{"free", freeBlitBuffer},
 	{"__gc", freeBlitBuffer},
 	{NULL, NULL}
diff --git a/crereader.lua b/crereader.lua
index 4578edc19..a1f77deec 100644
--- a/crereader.lua
+++ b/crereader.lua
@@ -111,6 +111,14 @@ function CREReader:goto(pos, pos_type)
 
 	self.doc:drawCurrentPage(self.nulldc, fb.bb)
 
+	print("## self.show_overlap "..self.show_overlap)
+	if self.show_overlap < 0 then
+		fb.bb:dimRect(0,0, width, -self.show_overlap)
+	elseif self.show_overlap > 0 then
+		fb.bb:dimRect(0,height - self.show_overlap, width, self.show_overlap)
+	end
+	self.show_overlap = 0
+
 	if self.rcount == self.rcountmax then
 		print("full refresh")
 		self.rcount = 1
@@ -136,10 +144,12 @@ function CREReader:gotoTocEntry(entry)
 end
 
 function CREReader:nextView()
+	self.show_overlap = -self.pan_overlap_vertical
 	return self.pos + G_height - self.pan_overlap_vertical
 end
 
 function CREReader:prevView()
+	self.show_overlap = self.pan_overlap_vertical
 	return self.pos - G_height + self.pan_overlap_vertical
 end
 
diff --git a/rendertext_example.lua b/rendertext_example.lua
deleted file mode 100755
index 3c208b8f5..000000000
--- a/rendertext_example.lua
+++ /dev/null
@@ -1,27 +0,0 @@
-#!./kpdfview
-require "rendertext"
-require "graphics"
-
-fb = einkfb.open("/dev/fb0")
-G_width, G_height = fb:getSize()
-
-print("open")
-
-face = freetype.newBuiltinFace("sans", 64)
---face = freetype.newFace("test.ttf", 64)
-print("got face")
-
-if face:hasKerning() then
-	print("has kerning")
-end
-
-fb.bb:paintRect(1,1,599,300,7);
-
-renderUtf8Text(fb.bb, 100, 100, face, "h", "AV T.T: gxyt!", true)
-renderUtf8Text(fb.bb, 100, 200, face, "h", "AV T.T: gxyt!", false)
-
-fb:refresh()
-
-while true do
-	local ev = input.waitForEvent()
-end
diff --git a/test/tall.pdf b/test/tall.pdf
new file mode 100644
index 000000000..c58ebc3d8
Binary files /dev/null and b/test/tall.pdf differ
diff --git a/unireader.lua b/unireader.lua
index 7796509da..b856f606d 100644
--- a/unireader.lua
+++ b/unireader.lua
@@ -54,6 +54,7 @@ UniReader = {
 	pan_y = 0,
 	pan_margin = 20, -- horizontal margin for two-column zoom
 	pan_overlap_vertical = 30,
+	show_overlap = 0,
 
 	-- the document:
 	doc = nil,
@@ -355,6 +356,9 @@ end
 
 -- blank the cache
 function UniReader:clearCache()
+	for k, _ in pairs(self.cache) do
+		self.cache[k].bb:free()
+	end
 	self.cache = {}
 	self.cache_current_memsize = 0
 end
@@ -552,6 +556,14 @@ function UniReader:show(no)
 		"width:"..width..", height:"..height)
 	fb.bb:blitFrom(bb, dest_x, dest_y, offset_x, offset_y, width, height)
 
+	print("## self.show_overlap "..self.show_overlap)
+	if self.show_overlap < 0 then
+		fb.bb:dimRect(0,0, width, dest_y - self.show_overlap)
+	elseif self.show_overlap > 0 then
+		fb.bb:dimRect(0,dest_y + height - self.show_overlap, width, self.show_overlap)
+	end
+	self.show_overlap = 0
+
 	-- render highlights to page
 	if self.highlight[no] then
 		self:toggleTextHighLight(self.highlight[no])
@@ -668,6 +680,7 @@ function UniReader:nextView()
 			-- goto next view of current page
 			self.offset_y = self.offset_y - G_height
 							+ self.pan_overlap_vertical
+			self.show_overlap = -self.pan_overlap_vertical -- top < 0
 		end
 	else
 		-- not in fit to content width pan mode, just do a page turn
@@ -695,6 +708,7 @@ function UniReader:prevView()
 			-- goto previous view of current page
 			self.offset_y = self.offset_y + G_height
 							- self.pan_overlap_vertical
+			self.show_overlap = self.pan_overlap_vertical -- bottom > 0
 		end
 	else
 		-- not in fit to content width pan mode, just do a page turn
@@ -1183,8 +1197,8 @@ function UniReader:addAllCommands()
 					x = unireader.shift_x / 5
 					y = unireader.shift_y / 5
 				elseif unireader.pan_by_page then
-					x = G_width;
-					y = G_height - unireader.pan_overlap_vertical; -- overlap for lines which didn't fit
+					x = G_width
+					y = G_height - unireader.pan_overlap_vertical -- overlap for lines which didn't fit
 				else
 					x = unireader.shift_x
 					y = unireader.shift_y
@@ -1226,11 +1240,15 @@ function UniReader:addAllCommands()
 					unireader.offset_y = unireader.offset_y + y
 					if unireader.offset_y > 0 then
 						unireader.offset_y = 0
+					elseif unireader.pan_by_page then
+						unireader.show_overlap = unireader.pan_overlap_vertical -- bottom
 					end
 				elseif keydef.keycode == KEY_FW_DOWN then
 					unireader.offset_y = unireader.offset_y - y
 					if unireader.offset_y < unireader.min_offset_y then
 						unireader.offset_y = unireader.min_offset_y
+					elseif unireader.pan_by_page then
+						unireader.show_overlap = -unireader.pan_overlap_vertical -- top
 					end
 				elseif keydef.keycode == KEY_FW_PRESS then
 					if keydef.modifier==MOD_SHIFT then