def view_getApplicationLogo
      return VIEW_APPLOGO if defined? VIEW_APPLOGO
      dir = "#{Rails.root}/app/assets/images/lato/"
      if File.exist?("#{dir}/logo.svg")
        return "lato/logo.svg"
      end
      if File.exist?("#{dir}/logo.png")
        return "lato/logo.png"
      end
      if File.exist?("#{dir}/logo.jpg")
        return "lato/logo.jpg"
      end
      if File.exist?("#{dir}/logo.gif")
        return "lato/logo.gif"
      end
      return false
    end
def view_getApplicationLogo
      return VIEW_APPLOGO if defined? VIEW_APPLOGO
      dir = "#{Rails.root}/app/assets/images/lato/"
      if File.exist?("#{dir}/logo.svg")
        return "lato/logo.svg"
      end
      if File.exist?("#{dir}/logo.png")
        return "lato/logo.png"
      end
      if File.exist?("#{dir}/logo.jpg")
        return "lato/logo.jpg"
      end
      if File.exist?("#{dir}/logo.gif")
        return "lato/logo.gif"
      end
      return false
    end
This function return the url of application logo.