A web toolbar with these requirements:
1- original bar is here:
[login to view URL]
2- Assume that bar code will be hosted on another domain
3- can be added to any website with maximum 6 code lines
4- use techniques like iframes cross domain communication (example: meebo bar ) to offer a sandbox & safe environment for the bar.
5- Final result: the bar code (hosted on domain A) is injected in site B with very few javascript code and bar components are sand-boxed like here:
[login to view URL]