Handling Browser Events

Hi all ,
I have the following requirement. I use a servlet to generate a PDF report. So I set the responseType in the servlet to be 'application/pdf'.
This displays the PDF file in the browser.
If the User chooses to Fax the PDF by choosing the File /Fax(RightFax Server) option, then I should be able to bypass the Popup( which usually captures the phone number to Fax the details) and fax the information directly to a phone number.

Please let me know if there is any way to achieve this.

Thanks,