Javascript in a PDF (accessed by Adobe Reader)

Whenever a PDF with a javascript-doc action set to execute on doc open, I would like a unique string to be added to the top of each page. Generating the string seems easy, but how would I tell the script to insert the generated string into the currently opened PDF?

And, would this work if the PDF was opened in Reader?


function uniqid()
    {
    var newDate = new Date;
    return newDate.getTime();
    }

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Bobo--just_East_of_MadisonAsked:
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Karl Heinz KremerCommented:
You would create a text field at the location where you want the string to be placed. The calculation script of that field would then fill in the correct value. This will work in Reader, but you cannot save the updated value  (unless the document has the extended reader rights assigned to it).

Have you worked with interactive PDFs before? If not, I can give you more information about how to set up the field.
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