function(combo, record, eOpts )
{
      var form = combo.up('form');
      var fieldSPXS = form.getForm().findField('GuiGe');
      var fieldCYFW = form.getForm().findField('TiaoXingMa');
      var fieldDWST = form.getForm().findField('ShengChanXuKeZhengBianHao');
       if (combo.getValue()=='非定型包裝')
      {
          fieldSPXS .setVisible(
 
false);    
          fieldCYFW.setVisible(false);   
         fieldDWST.setVisible(false);    
    }
  else
{
         fieldSPXS .setVisible(true);    
          fieldCYFW.setVisible(true);   
         fieldDWST.setVisible(true);    
}
    
}