Multiple iframes

Hello, I have an enormus doubt about iframes and servlets. My situation is the next, I have a jsp page, where I have two iframes. In one of them (the first) I have to do an operation. This operation goes to the servlet, where I redirect to other jsp. THe problem is that, the new jsp is open inside the iframe without refresh the otherone (the second), and this is a very big problem. How can I say to refresh the second iframe since the servlet (or perhaps there is other solution)

If somebody has an idea, It would be great!
THanks! :)

Pablo

Do you want to refresh the parent page on close of the iframe?

Thank you for your answer.
Well, perhaps this coud be a posibility, but it would be greatful if I could refresh only de second iframe.

Pablo

You could do that with JS, did you try it?

Yes I tried, but doesn't work. Perhaps I am wrong with the JS. Where I have to put it? And what I have to put?

THank you

Can you show me the JS code you've embedded in and how you invoke it.