link = new CLabel(links_container,SWT.NONE);
    link.setFont(link_font);
    link.setText(JMConstants.JMULE_WEB_SITE);
    link.setData(JMConstants.JMULE_WEB_SITE);
    link.setForeground(SWTThread.getDisplay().getSystemColor(SWT.COLOR_BLUE));
    link.setCursor(new Cursor(SWTThread.getDisplay(),SWT.CURSOR_HAND));
    link.addMouseListener(link_listener);
    link = new CLabel(links_container,SWT.NONE);
    link.setText(_._("aboutwindow.tab.general.label.forum") + " : ");
    
    link = new CLabel(links_container,SWT.NONE);
    link.setFont(link_font);
    link.setText(JMConstants.JMULE_FORUMS);
    link.setData(JMConstants.JMULE_FORUMS);
    link.setForeground(SWTThread.getDisplay().getSystemColor(SWT.COLOR_BLUE));
    link.setCursor(new Cursor(SWTThread.getDisplay(),SWT.CURSOR_HAND));
    link.addMouseListener(link_listener);
    
    if (JMConstants.IS_NIGHTLY_BUILD) {
      CTabItem nightly_build = new CTabItem(tab_list,SWT.NONE);
      content = new Composite(tab_list,SWT.NONE);
      nightly_build.setControl(content);
      nightly_build.setText(_._("aboutwindow.tab.nightly_build"));
      layout = new GridLayout(1,false);
      layout.marginHeight = 10;
      layout.marginWidth  = 10;
      content.setLayout(layout);
      
      final Label image = new Label(content,SWT.NONE);
      image.setImage(SWTImageRepository.getImage("bomb.png"));
      layout_data = new GridData();
      layout_data.grabExcessHorizontalSpace = true;
      layout_data.horizontalAlignment = GridData.CENTER;
      image.setLayoutData(layout_data);
      
      Label nightly_build_label = new Label(content,SWT.NONE);
      nightly_build_label.setForeground(SWTThread.getDisplay().getSystemColor(SWT.COLOR_RED));
      layout_data = new GridData(GridData.FILL_HORIZONTAL);
      layout_data.horizontalAlignment = GridData.CENTER;
      nightly_build_label.setLayoutData(layout_data);
      nightly_build_label.setText(_._("aboutwindow.tab.nightly_build.label.nightly_buld_str1"));
      
      Label nightly_build_label2 = new Label(content,SWT.NONE);
      nightly_build_label2.setForeground(SWTThread.getDisplay().getSystemColor(SWT.COLOR_RED));
      layout_data = new GridData(GridData.FILL_HORIZONTAL );
      layout_data.horizontalAlignment = GridData.CENTER;
      nightly_build_label2.setLayoutData(layout_data);
      nightly_build_label2.setText(_._("aboutwindow.tab.nightly_build.label.nightly_buld_str2")+" "+_._("aboutwindow.tab.general.label.forum"));
      
      CLabel forum_link = new CLabel(content,SWT.NONE);
      layout_data = new GridData(GridData.FILL_HORIZONTAL );
      layout_data.horizontalAlignment = GridData.CENTER;
      forum_link.setLayoutData(layout_data);
      forum_link.setFont(link_font);
      forum_link.setText(JMConstants.JMULE_FORUMS);
      forum_link.setData(JMConstants.JMULE_FORUMS);
      forum_link.setForeground(SWTThread.getDisplay().getSystemColor(SWT.COLOR_BLUE));
      forum_link.setCursor(new Cursor(SWTThread.getDisplay(),SWT.CURSOR_HAND));
      forum_link.addMouseListener(link_listener);
    }
    
    CTabItem environment_tab = new CTabItem(tab_list,SWT.NONE);
    content = new Composite(tab_list,SWT.NONE);