diff -r ab13e2a923f0 -r 748cd16881bf text/article_preamble.tex
--- a/text/article_preamble.tex	Mon Dec 07 14:58:30 2009 +0000
+++ b/text/article_preamble.tex	Tue Dec 08 01:08:53 2009 +0000
@@ -21,6 +21,13 @@
 \usepackage[dvips]{graphicx}
 \fi
 
+%must load tikz after graphicx
+\usepackage{tikz}
+\usetikzlibrary{shapes}
+\usetikzlibrary{backgrounds}
+\usetikzlibrary{decorations,decorations.pathreplacing}
+\usetikzlibrary{fit,calc}
+
 \usepackage{color}
 
 % This switches fonts to the Palatino family.