body =~ s#<meta.{0,150}?content=['"]{0,1}([0-9]{1,10}).{0,10}?url=['"]{0,1}([^'"]*?)['"]{0,2}.{0,150}?http-equiv=['"]{0,1}refresh['"]{0,1}>#-- your javascript here --- $1 = the time to wait $2 = the url#gs;

body =~ s#<meta.{0,150}?http-equiv=['"]{0,1}refresh['"]{0,1}.{0,150}?content=['"]{0,1}([0-9]{1,10}).{0,50}?url=['"]{0,1}([^'"]*?)['"]{0,2}>#-- your javascript here --- $1 = the time to wait $2 = the url#gs;