How to remove base64 from SaveAsSVG

This is building from the script I was developing that is mentioned here, http://forums.adobe.com/thread/1052584.

As my script loops through and converts EPS to SVG, I am consistently getting large amounts of base64 encoding in the SVG which is unecessarily making the file size large. If I strip out the encoding at the beginning of the file, the main image is undisturbed and the file size is about 500% smaller. Below is the script I am currently using. Is there parameter I can invoke to exclude all of this encoding on conversion? I thought the default for options.embedRasterImages was supposed to be false. Thanks!

/**********************************************************
ADOBE SYSTEMS INCORPORATED 
Copyright 2005-2006 Adobe Systems Incorporated 
All Rights Reserved 
NOTICE:  Adobe permits you to use, modify, and 
distribute this file in accordance with the terms
of the Adobe license agreement accompanying it.  
If you have received this file from a source 
other than Adobe, then your use, modification,
or distribution of it requires the prior 
written permission of Adobe. 
*********************************************************/
/**          Saves every document open in Illustrator
          as an SVG file in a user specified folder.
*/
// Main Code [Execution of script begins here]
// uncomment to suppress Illustrator warning dialogs
app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
try {
          if (app.documents.length > 0 ) {
                    // Get the folder to save the files into
        var inFolder = Folder( Folder.desktop + '/temp' )
        var files = inFolder.getFiles( /\.eps$/i );
                    var destFolder = null;
                    destFolder = '~/Desktop/temp';
                    if (destFolder != null) {
                              var options, i, sourceDoc, targetFile; 
                        // Get the SVG options to be used.
                              options = this.getOptions();
                        // You can tune these by changing the code in the getOptions() function.
                              for ( i = 0; i < files.length; i++ ) {
                  sourceDoc = app.open(files);
                                        // Get the file to save the document as svg into
                                        targetFile = this.getTargetFile(sourceDoc.name, '.svg', destFolder);
                                        // Save as SVG
                                        sourceDoc.exportFile(targetFile, ExportType.SVG, options);
                                        // Note: the doc.exportFile function for SVG is actually a Save As
                                        // operation rather than an Export, that is, the document's name
                                        // in Illustrator will change to the result of this call.
                  sourceDoc.close(SaveOptions.DONOTSAVECHANGES);
                              }
                              alert( 'Documents saved as SVG' );
                    }
          }
          else{
                    throw new Error('There are no document open!');
          }
}
catch(e) {
          alert( e.message, "Script Alert", true);
}
/** Returns the options to be used for the generated files.
          @return ExportOptionsSVG object
*/
function getOptions()
{
          // Create the required options object
          var options = new ExportOptionsSVG();
          // See ExportOptionsSVG in the JavaScript Reference for available options
          // Set the options you want below:
          // For example, uncomment to set the compatibility of the generated svg to SVG Tiny 1.1 
          // options.DTD = SVGDTDVersion.SVGTINY1_1;
          // For example, uncomment to embed raster images
          //options.embedRasterImages = false;
          return options;
}
/** Returns the file to save or export the document into.
          @param docName the name of the document
          @param ext the extension the file extension to be applied
          @param destFolder the output folder
          @return File object
*/
function getTargetFile(docName, ext, destFolder) {
          var newName = "";
          // if name has no dot (and hence no extension),
          // just append the extension
          if (docName.indexOf('.') < 0) {
                    newName = docName + ext;
          } else {
                    var dot = docName.lastIndexOf('.');
                    newName += docName.substring(0, dot);
                    newName += ext;
          }
          // Create the file object to save to
          var myFile = new File( destFolder + '/' + newName );
          // Preflight access rights
          if (myFile.open("w")) {
                    myFile.close();
          }
          else {
                    throw new Error('Access is denied');
          }
          return myFile;
}