Action - Batch Channel automation

// Import files as Named Alpha Channels
// Built on:
// Import Folder as Layers - Photoshop CS/CS2 Script
// Author: Trevor Morris (tmorris@fundy.net) - with help from Krista Cook and Gunnar Landva
// Tweaker for this version: David Pardini
// Assist from Mike Hale of ps-scripts.com!
// Version: 1.0 
// debugging code
/*
debugger;
$.level = 1;
*/
// Import Folder as Layers - Photoshop CS/CS2 Script
// Description: Imports a series of images (from the designated folder) as named layers into a new document
// Author: Trevor Morris (tmorris@fundy.net) - with help from Krista Cook and Gunnar Landva
// Version: 1.3.1, 29/May/2005
// debugging code
/*
debugger;
$.level = 1;
*/
// determine Photoshop version number
function getCSVersion() {
   return parseInt(app.version);
}
function getFolder() {
   // display the Path Entry dialog with Browse option for Photoshop CS
   if (getCSVersion() === 8) {
      // create dialog for pasting/typing path to images folder
      var dlg = new Window('dialog', 'Import Folders as Layers', [0,0,480,118]);
      dlg.center();
      dlg.add('statictext', [15,15,460,35], 'Please enter the path of the folder to be imported:');
      dlg.add('edittext', [15,45,465,65], '', {name:'pathText'});
      dlg.pathText.active = true;
      dlg.add('button', [235,80,305,103], 'Browse', {name:'browse'});
      dlg.browse.onClick = function() {this.parent.close(3);};
      dlg.add('button', [315,80,385,103], 'OK', {name:'ok'});
      dlg.add('button', [395,80,465,103], 'Cancel', {name:'cancel'});
      // display dialog
      dlg.result = dlg.show();
      if (dlg.result == 3) { // Browse
         return Folder.selectDialog('Please select the folder to be imported:', Folder('~'));
      } else if (dlg.result == 1) { // OK
         return Folder(dlg.pathText.text);
      } else { // Cancel (dlg.result == 0)
         return null;
      }
   }
   // display only the browse dialog for Photoshop CS2+
   else {
      return Folder.selectDialog('Please select the folder to be imported:', Folder('~'));
   }
}
function importFolderAsLayers(selectedFolder) {
       // if a folder was selected continue with action, otherwise quit
       if (selectedFolder) {
          // create document list from files in selected folder
          var docList = selectedFolder.getFiles();
          for (var i = 0; i < docList.length; i++) {
             // open each document in file list
             if (docList instanceof File) {
                // get the file name
                var fName = docList.name.toLowerCase();
                
                // check for supported file formats
                if ((fName.indexOf(".gif") == -1) && (fName.indexOf(".jpg") == -1) && (fName.indexOf(".png") == -1) && (fName.indexOf(".bmp") == -1) && (fName.indexOf(".tif") == -1) && (fName.indexOf(".psd") == -1)) {
                   // skip unsupported formats
                } else {
                    // open documents from list;
                    var docRef = open(docList);
                   // if supported documents exist, create a new document
                   if (!newCanvas) {
                       // get the file size and set the units
                       var originalRulerUnits = preferences.rulerUnits;
                      preferences.rulerUnits = Units.PIXELS;
                     var fHigh = docRef.height.value;
                     var fWide = docRef.width.value;
                      var fRes = docRef.resolution;
                      // remember unit settings and change to pixels
                      var newDoc = app.documents.add(fHigh, fWide, fRes, "Start File", NewDocumentMode.RGB, DocumentFill.TRANSPARENT, 1);
                      // restore original unit setting
                      preferences.rulerUnits = originalRulerUnits;
                      app.activeDocument = docRef;
                      var newCanvas = 1;
                   }
                   //  get document name; flatten; duplicate to new document; close;
                   // name layer in new document using the original document name
                   var docName = docRef.name;
                   docRef.flatten();
                   docRef.changeMode(ChangeMode.RGB);
                   docRef.channels[0].duplicate(documents[newDoc.name],ElementPlacement.PLACEATBEGINNING);
                   docRef.close(SaveOptions.DONOTSAVECHANGES);
                   //rename active channel
                   app.activeDocument.activeChannels[0].name = fName;
                }
             }
          }
       }
    }
importFolderAsLayers(getFolder());

Sorry - my fault - wrong script ... here's the right one...