Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -1,5 +1,7 @@
+IMG_WIDTH = 1024
+
 IMGS = imgs/network-public.png imgs/network-private.png imgs/network-community.png \
 	imgs/confine-partners.png imgs/extend-network.png \
 	imgs/testbed.png imgs/testbed-slice.png imgs/testbed-cd-rd.png \
 	imgs/testbed-logos-node.png imgs/testbed-logos-mgmt.png imgs/testbed-logos-devel.png
 IMGS_BEAMER = imgs/confine,background.pdf
@@ -19,40 +21,40 @@
 
 imgs/confine,background.pdf:	logos/confine,logo.svg
 	inkscape -z -D -A $@ $<
 
 imgs/network-public.png:	diagrams/network-public.dia
-	dia -e $@ -s 1024x $<
+	dia -e $@ -s $(IMG_WIDTH)x $<
 
 imgs/network-private.png:	diagrams/network-private.dia
-	dia -e $@ -s 1024x $<
+	dia -e $@ -s $(IMG_WIDTH)x $<
 
 imgs/network-community.png:	diagrams/network-community.dia
-	dia -e $@ -s 1024x $<
+	dia -e $@ -s $(IMG_WIDTH)x $<
 
 imgs/confine-partners.png:	logos/confine-partners.svg
-	inkscape -z -C -e $@ -w 1024 $<
+	inkscape -z -C -e $@ -w $(IMG_WIDTH) $<
 
 imgs/extend-network.png:	diagrams/extend-network.svg
-	inkscape -z -C -e $@ -w 1024 $<
+	inkscape -z -C -e $@ -w $(IMG_WIDTH) $<
 
 imgs/testbed.png:	diagrams/testbed-logos.dia
-	dia -e $@ -L testbed -s 1024x $<
+	dia -e $@ -L testbed -s $(IMG_WIDTH)x $<
 
 imgs/testbed-slice.png:	diagrams/testbed-logos.dia
-	dia -e $@ -L testbed,slice -s 1024x $<
+	dia -e $@ -L testbed,slice -s $(IMG_WIDTH)x $<
 
 imgs/testbed-cd-rd.png:	diagrams/testbed-logos.dia
-	dia -e $@ -L testbed,slice,cd-rd -s 1024x $<
+	dia -e $@ -L testbed,slice,cd-rd -s $(IMG_WIDTH)x $<
 
 imgs/testbed-logos-node.png:	diagrams/testbed-logos.dia
-	dia -e $@ -L testbed,slice,cd-rd,logos-node -s 1024x $<
+	dia -e $@ -L testbed,slice,cd-rd,logos-node -s $(IMG_WIDTH)x $<
 
 imgs/testbed-logos-mgmt.png:	diagrams/testbed-logos.dia
-	dia -e $@ -L testbed,slice,cd-rd,logos-node,logos-mgmt -s 1024x $<
+	dia -e $@ -L testbed,slice,cd-rd,logos-node,logos-mgmt -s $(IMG_WIDTH)x $<
 
 imgs/testbed-logos-devel.png:	diagrams/testbed-logos.dia
-	dia -e $@ -L testbed,slice,cd-rd,logos-node,logos-mgmt,logos-devel -s 1024x $<
+	dia -e $@ -L testbed,slice,cd-rd,logos-node,logos-mgmt,logos-devel -s $(IMG_WIDTH)x $<
 
 
 clean:
 	rm -f $(IMGS) $(IMGS_BEAMER) slides,lightning.pdf slides,lightning.html