Check relative file instead of absolute, following the standard

[Yobikap]

The file attribute is a file path, relative to the current directory. That means that it cannot be an absolute file path (starting with /), nor can it contain ../ as part of that path

Please add this to your master branch.

see: http://httpd.apache.org/docs/2.2/howto/ssi.html

[zeevl]

thank you!