У вашего броузера проблема в совместимости с HTML5
How to install the PCB-gcode .ulp in EagleCad and use it to generate g-code suitable for a CNC mill.
EagleCad: http://www.cadsoftusa.com/download-eagle/?language=en
PCB-gcode: http://pcbgcode.org/read.php?12,803
Let me know if you have any questions or comments (especially corrections!)