Start a new Document with Millimeters

Question

Hi there,
I am new to Illustratror Scripting.
I changed a Script from William Ngan, http://www.metaphorical.net and http://forums.adobe.com/message/3813716?tstart=1
It saves EPS-files instead of AI-Files. But the Units are still in PT. I want them to be in Millimeters and the artboard isn't focused on the viewport.
I suppose it's RulerUnits.Millimeters but somehow it doesn't work and when I pick a line it shows pt. I don't know how to write it. Perhaps you find the solution.
I deleted the Comments of William so it's not as long as the original. I tried at the line:
var newdoc = app.documents.add ( doc.documentColorSpace, doc.width, doc.height );
I thought this would help:
newdoc.RulerUnits = doc.RulerUnits;
But it doesn't work. Hope it shows the idea.
/* Here the Script starts */
var doc = app.activeDocument;
var docname = (doc.name.split('.'))[0]; // name
var doc_artboard = doc.artboards[0].artboardRect;
if (app.documents.length > 1) {
        alert( "Nur ein Dokument darf geöffnet sein. Schließen Sie andere Dokumente und führen Sie das Script erneut aus.");
} else {
    var ok = confirm( "Bitte speichern Sie zuerst Ihr Original.\nDie Ebenen werden im gleichen Ordner wie Ihre Datei gespeichert.\nWeiter?" );
    if (ok) {
        // prepare layers
        for(var i=0; i<doc.layers.length; i++) {
            doc.layers[i].visible = false;
        // go through each layers
        for(var i=0; i<doc.layers.length; i++) {
            app.activeDocument = doc;
            if (i>0) doc.layers[i-1].visible = false;
            doc.layers[i].visible = true;
            doc.activeLayer = doc.layers[i];
            saveAI( doc.path, doc.activeLayer.name, i );
        // close original file without saving
        doc.close( SaveOptions.DONOTSAVECHANGES );
function saveAI( path, name, id ) {
    var currlayer = doc.layers[id];   
    var g = currlayer.groupItems.add();
    group( g, currlayer.pageItems );   
    var t = g.top;
    var l = g.left;
    var myPreset = app.getPresetSettings("Druck");
    app.documents.addDocument("Druck", myPreset );
    var newdoc = app.documents.add ( doc.documentColorSpace, doc.width, doc.height );
    newdoc.artboards[0].artboardRect = doc_artboard;
    /* app.preferences.rulerUnits = Units.Millimeters; */
    /* app.activeDocument.rulerUnits = RulerUnits.Millimeters; */
    /* newdoc.Units = RulerUnits.Millimeters; */ 
    var newlayer = newdoc.layers[0];
    g.duplicate( newlayer, ElementPlacement.PLACEATBEGINNING );
    newlayer.pageItems[0].top = t;
    newlayer.pageItems[0].left = l;
    path.changePath( name+".eps" );
    var saveOpts = new EPSSaveOptions();
    /* saveOpts.compatibility = ILLUSTRATOR16; */
    saveOpts.embedLinkedFiles = true;
    saveOpts.includeDocumentThumbnails = true;
    saveOpts.embedAllFonts = true;
    saveOpts.saveMultipleArtboards = false;
    saveOpts.cmykPostScript = true;
    saveOpts.preview = EPSPreview.TRANSPARENTCOLORTIFF;
    newdoc.saveAs( path, saveOpts );
    newdoc.close( SaveOptions.DONOTSAVECHANGES );
    // wait for the new file to save and close before continue.
    // A callback function (if possible) will be better than a while loop for sure.
    while (app.documents.length > 1) {
        continue;
function group( gg, items ) {
    var newItem;
    for(var i=items.length-1; i>=0; i--) {
        if (items[i]!=gg) {
            newItem = items[i].move (gg, ElementPlacement.PLACEATBEGINNING);
    return newItem;

Answer 1

Muppet Mark and pixxxel schubser were totally right! I thank both of you!
Now it's time for me to share the working version. The Preset "Druck" is for the german version. It's "Print" for the international.
The Script saves layers as individual EPS-Files. The RulerUnits are Millimeters not Point. The viewport is still not focused on the Artboard when opening the document but that's ...
var doc = app.activeDocument;
var docname = (doc.name.split('.'))[0]; // name
var doc_artboard = doc.artboards[0].artboardRect;
if (app.documents.length > 1) {
        alert( "Nur ein Dokument darf geöffnet sein. Schließen Sie andere Dokumente und führen Sie das Script erneut aus.");
} else {
    var ok = confirm( "Bitte speichern Sie zuerst Ihr Original.\nDie Ebenen werden im gleichen Ordner wie Ihre Datei gespeichert.\nWeiter?" );
    if (ok) {
        // prepare layers
        for(var i=0; i<doc.layers.length; i++) {
            doc.layers[i].visible = false;
        // go through each layers
        for(var i=0; i<doc.layers.length; i++) {
            app.activeDocument = doc;
            if (i>0) doc.layers[i-1].visible = false;
            doc.layers[i].visible = true;
            doc.activeLayer = doc.layers[i];
            saveEPS( doc.path, doc.activeLayer.name, i );
        // close original file without saving
        doc.close( SaveOptions.DONOTSAVECHANGES );
function saveEPS( path, name, id ) {
    var currlayer = doc.layers[id];   
    var g = currlayer.groupItems.add();
    group( g, currlayer.pageItems );   
    var t = g.top;
    var l = g.left;
    var w = doc.width;
    var h = doc.height;
    var w = 31.1*2.834645;
    var h = 28.15*2.834645;
    var myPreset = new DocumentPreset;
    myPreset.width = w;
    myPreset.height = h;
    myPreset.units = RulerUnits.Millimeters;
    myPreset.title = docname;
    var newdoc = documents.addDocument( "Druck", myPreset);
    newdoc.artboards[0].artboardRect = doc_artboard;
    var newlayer = newdoc.layers[0];
    g.duplicate( newlayer, ElementPlacement.PLACEATBEGINNING );
    newlayer.pageItems[0].top = t;
    newlayer.pageItems[0].left = l;
    path.changePath( name+".eps" );
    var saveOpts = new EPSSaveOptions();
    saveOpts.compatibility = Compatibility.ILLUSTRATOR16;
    saveOpts.embedLinkedFiles = true;
    saveOpts.includeDocumentThumbnails = true;
    saveOpts.embedAllFonts = true;
    saveOpts.saveMultipleArtboards = false;
    saveOpts.cmykPostScript = true;
    saveOpts.preview = EPSPreview.TRANSPARENTCOLORTIFF;   
    newdoc.saveAs( path, saveOpts );
    newdoc.close( SaveOptions.DONOTSAVECHANGES );   
    // wait for the new file to save and close before continue.
    // A callback function (if possible) will be better than a while loop for sure.
    while (app.documents.length > 1) {
        continue;
function group( gg, items ) {
    var newItem;
    for(var i=items.length-1; i>=0; i--) {
        if (items[i]!=gg) {
            newItem = items[i].move (gg, ElementPlacement.PLACEATBEGINNING);
    return newItem;