if ($url !~ /^http\:/i || $url !~ /^ftp:/i || $url !~ /^file:/i || $url !~ /^mailto:/i || $url !~ /^telnet:/i) { print header; print "Malformed URL"; print qq(); print "Malformed URL

You will be redirected to our main page in 4 seconds. Your url was: $url"; print ""; exit; }