Open a Popup with commnadButtom

Question

Hello,
can I open a Popup with a commnadButton? Und Load in the Popup a PDF`?
I can open a PDF but only in self window :-(
Thanks for help
   public String doActionShowPreview() {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        HttpServletResponse response = (HttpServletResponse)facesContext.getExternalContext().getResponse();         
        response.setContentType("application/pdf");
        response.setHeader ("Content-disposition", "inline");
        response.setHeader("Expires:"," Wednesday, 27-Dec-95 05:29:10 GMT");
        response.setHeader("Pragma:"," no-cache");
        Documents previewDoc = getEditDocument();
        List tagListForCreator = new ArrayList();
        Set tagList = previewDoc.getText();
        Iterator iter = tagList.iterator();
        while(iter.hasNext()) {
            DocumentText docText = (DocumentText)iter.next();
            XMLParserTagInfo info = new XMLParserTagInfo(docText.getTag(),docText.getText());
            tagListForCreator.add(info);
        Collections.sort(tagListForCreator);
       XMLInDesignCreator xmlCreator = new XMLInDesignCreator();
       xmlCreator.createXML(tagListForCreator,previewDoc.getDocName(),previewDoc.getDocName());
    File file = new File("C:\\tm\\preview\\"+ previewDoc.getDocName()+".pdf");
   //convert the file content into a byte array
   FileInputStream fileInuptStream = null;
   try {
       fileInuptStream = new FileInputStream(file);
   } catch (FileNotFoundException ex1) {
   BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInuptStream);
   ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
   int start = 0;
   int length = 1024;
   int offset = -1;
   byte[] buffer = new byte[length];
   try {
       while ((offset = bufferedInputStream.read(buffer, start, length)) != -1) {
           byteArrayOutputStream.write(buffer, start, offset);
   } catch (IOException ex2) {
       ex2.printStackTrace();
    try {
        bufferedInputStream.close();
        byteArrayOutputStream.flush();
        buffer = byteArrayOutputStream.toByteArray();
        byteArrayOutputStream.close();
    } catch (IOException ex3) {
        ex3.printStackTrace();
    response.setContentType("application/pdf");
    response.setHeader ("Content-disposition", "inline");
    response.setHeader("Expires:"," Wednesday, 27-Dec-95 05:29:10 GMT");
    response.setHeader("Pragma:"," no-cache");
    try {
        response.getOutputStream().write(buffer);
        response.getOutputStream().flush();
    } catch (IOException ex4) {
        ex4.printStackTrace();
    return "";
    }

Answer 1

Do the following
1) window.open('somePath/YOUR_JSF_PAGE .jsf') in your javascript code.
2) Invoke doActionShowPreview() method in the constructor of your BackingBean.
Hope this helps.
Karthik