Save Layers as PDF?

[evolvingvisions]

Is there a script that can export the top-level Layers of an Adobe Illustrator CS3 document as a multi-PAGE PDF?

 

[evolvingvisions]

this was the script i used in CS2, but it will not work in CS3. Can anyone help me out.

const mm = 72/25.4;

var doc = app.activeDocument;

var bleedBorder = 5 *mm;
var dialogStr = 'Write PDFpreset name';
var NamePreset = '[Illustrator Default]';

var strColor = new CMYKColor();
var nameLayer = 'effect';
strColor.cyan = 0;
strColor.magenta = 0;
strColor.yellow = 0;
strColor.black = 0;

if (documents.length > 0){
if (str = prompt (dialogStr, NamePreset)) {
NamePreset = str;
var saveOpts = new PDFSaveOptions();
saveOpts.pDFPreset = NamePreset;
h = doc.height;
w = doc.width;
if (doc.saved==false) doc.save();
var mLayer= doc.layers.add();
mLayer.name = nameLayer;
var rect = mLayer.pathItems.rectangle (h + bleedBorder, 0 - bleedBorder, w + bleedBorder*2, h + bleedBorder*2);
rect.fillColor = strColor;
rect.stroked = false;
rect.opacity = 100.0;
mLayer.zOrder(ZOrderMethod.SENDTOBACK);
mLayer.locked = true;
for (i=0; i<doc.layers.length; i++)
if (doc.layers.locked == false) doc.layers.visible = false;
fullDocName = doc.fullName;
var param = doc.name.split('.');
realDocName = param[0];
for (i=0; i<doc.layers.length; i++){
if (i-1<0) doc.layers.visible = true;
else {
doc.layers[i-1].visible = false;
doc.layers.visible = true;
}
if (doc.layers.locked == false) {
docName = '_sb_'+realDocName+doc.layers.name;
var saveName = new File ( doc.path + "/" + docName );
doc.saveAs( saveName, saveOpts );
}
}
doc.close(SaveOptions.DONOTSAVECHANGES);
doc = null;
app.open (fullDocName);
}
}