function Warning(){
 this.pdfSource = "P.D.F. WARNING !\n\nThis hyper reference points to a P.D.F. file, which is not a regular web page. If you still wish to open it in your web browser, at the possible expense of the loss of your browser's normal navigation functions, click O.K.\n\nIf you prefer to download it to your local computer before opening it in a P.D.F. reader, click Cancel, then right-click the hyper reference and choose \"Save as...\".\n\nAnother safe method to view P.D.F. files is to open them in a new window by holding <Shift> down while left-clicking on the hyper reference.";
 this.pdf = pdf;
}

function pdf(){
 return confirm(this.pdfSource);
}