如何获取JavaScript中的当前桌面路径？ （Windows 7的）

Question

I feel like this should be simple but I searched for a good half hour and couldn't find it.

Basically I have an Adobe PDF file that runs a snippet of JavaScript to verify input and, if it deems the input ok, save the PDF to the desktop. This works fine when I hard code in the desktop, ex.:

var mypath = "/c/users/someusernamehere/desktop/";

However, we are trying to deploy this to many machines here, I do not want to have to hard code in everyone's desktop path.

Is there a way for JavaScript to get the desktop path of the current user?

PS. All of our machines use Windows 7.

/EDIT To clarify, this is not an Internet thing, it is all local. Just a PDF that is already stored on the user's machine accessing a JavaScript file stored in the same directory. That directory is:

C:\\Program Files (x86)\\Adobe\\Reader 11.0\\Reader\\Javascripts

Answer 1

var objWSHShell = new ActiveXObject("WScript.Shell");
var strDesktopPath = objWSHShell.SpecialFolders("Desktop");