how to invoke a   "saveas dialog box" which  should save only ".pdf files"

jakiboy used Ask the Experts™
using javascript, i invoked a saveas dialog box, the problem is , it is only storing .html & .doc files by default, i want to store .pdf files only

the code i used is

function SaveFile(fname)

   document.execCommand('saveas', null,fname)

<input type= "button" value="save" onclick="SaveFile('');">
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  document.execCommand('saveas', ...

command just opens the File/Save As Dialog of the Explorer. But you can't save a web document as pdf from the File menu of the Explorer.

So you won't get it with the execCommand method.

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