let say i have a page , and i want to allow 3rd party to embed small application/iframe into my page. in order to use caja on my page to secure the 3rd party small app/iframe. do i need to put any extra javascript/serverside code in order to use caja? fetching of the 3rd party small application is done through proxy or direct iframe?
It sounds like you want to host a Caja module in your page? Check out the integration guide documentation.