#!/bin/sh

sed  \
    -e '/http/s,http:\/\/www.polylith.com\/images,../images,' \
    -e '/gifs/s,gifs,images/FancyLines,' \
    -e '/freehand/s,freehand,wavy,' \
    -e '/melt/s,melt,melting,' \
    -e '/barbwire/s,barbwire,barbed_wire,' \
   < $1 > $1.new