File Manipulation using javascript

Dear Experts
 I have a requirement such that i ve to write into a file using javascript..
 The First thing i wud like to know is whether or not it is possible to write into a file..using javascript..
If so, please lemme know how it is ??
 expecting answers from u all..
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are you executing it as a browser script or as a window script?

if you are using javascript to run as a window script, it's possible, you can hook it up w/ Scripting.FileSystemObject Active X object to access file system.
JavaScript runs in a environment called "sandbox" this means, that JavaScript is execute inside the browser. It is not possible to accesses resources (i.e the filesystem)on the client machine outside this sandbox.
What PBall stated out ir correct, but not clear.
JavaScript can not access ActiveX. A Language called JScript from MS can access Active-X objects. But this bound to windows. It depends on the system configuration whether the execution of Active-X Controls is possible or not.

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