saving to a relative location with javascript

[c.pfaffenbichler]

Some time ago somebody, XBytor I think, generously told me how to get the file-location and save a copy into the same folder as the original file.
But at the company I work at many people have the individual job-folders set up to contain a folder for the layered psd-files and a Links-folder containing the separated and flattened files for placing in Indesign.
Now is there a way to go a step up in the document path and then save the copy into the neighboring folder (provided that it is always named the same of course) with Javascript?

Any suggestions or a simple confirmation regarding the possibility appreciated.

[Paul Riggott]

alert(app.activeDocument.path);
alert(app.activeDocument.path.parent);
alert(app.activeDocument.path.parent + "/FolderName");
alert(app.activeDocument.path.parent.parent + "/FolderName");

[c.pfaffenbichler]

Great, thanks for the speedy reply!