Exporting Visible layers in photoshop using script.

Hi,

I am new to adobe scripting, so please forgive me if this has been covered before.

I have a script from Chandler McWilliam's Adobe Scripting book, which I would like to use. Essentially it exports all the visible layers in an open PS document. The script works, but I cannot get it to export to a folder/location of my choosing. It defaults to exporting to the folder which contains the Photoshop application.

I am using a Mac.

The Script looks like this:

function exportVisible(doc) {

  var myJPEG = new JPEGSaveOptions();

  myJPEG.quality = 10;

  myJPEG.formatOptions = FormatOptions.STANDARDBASELINE;

  var myPath = "/Users/si/Desktop/JAVATESTFOLDER";

  var myFolder = new Folder(myPath);

  myFolder.create();

  var settings = new Array();

  var current; // current layer reference

  for (var i=0; i<doc.layers.length; i++) {

  current = doc.layers;

  settings = current.visible;

  doc.layers.visible = false;

  }

  for (var i=0; i<doc.layers.length; i++) {

  current = doc.layers;

  if (settings) {

  current.visible = true;

  var myFile = new File("Img-" + current.name + ".jpg");

  doc.saveAs(myFile, myJPEG, true);

  current.visible = false;

  }

  }

  for (var i=0; i<doc.layers.length; i++) {

  current = doc.layers;

  current.visible = settings;

  }

}

exportVisible(activeDocument);

I have tried numerous variations, but to no avail. I would be very grateful for any advice.