Build CommonJS module for the success function of an HTTP request

Hello, I use very often a code by Malcolm Hollingsworth that lets me get/post/... data from the server.

net.download({
          method: 'POST', 
          url: Ti.App.Properties.getString('REST')+'login',
          timeout: 500, 
          type: 'json', 
          param: {password:password_tf.getValue(),session_id:1a75hf654},
          success: function (success) {
 
            Ti.API.info(success);
 
            Ti.App.Properties.setObject("sessionData",success);
 
            Ti.App.fireEvent('loginComplete');
 
          },
          error: function (error) {
 
            Ti.API.info(error);
 
            alert("ERROR");
 
          },
          progress: function (progress) {
 
            Ti.API.info(progress.value);
          },
          state: function (state) {
        //
        Ti.API.info(state);
        }
     });

The success body of this code may result in very large portions of code, so I would like to implement it as a separate commonJS module. So, first of all, I would like to know if this is possible. If it is possible, can I reference views, windows (etc.) that are in the window where I put this code? Or should I pass them to the success function?

Is there any other way to "compact" a little this code? Problem is I use it many times in the same CommonJS window and anything can become very... "verbose" :-)

Thanks.