Is there a way to print a pdf document without opening it, if user just select the pdf files in the checkbox and click a button?

I tried the following two methods, but both fail.

1. open a new window:

[CODE=javascript]win=window.open ("","","widt h=5 height=5");
win.blur();
win.document.lo cation="http://www.mydomain.co m/mydoc.pdf";
win.print();...