rm -rf $1/
unzip -q -o -d $1 mathjax-MathJax-v1.1a-0-g1697387.zip
mv $1/mathjax-MathJax-f5cd294/* $1/.
rm -r $1/mathjax-MathJax-f5cd294
chown -R www:www $1
find $1 -type d -exec chmod u=rwx,go-rwx {} \;