JSF/Browser Caching Problem

I am working on a JSF based project. I have a page which has a list of candidates profile links. you can click on each link to go into his/her profile and upload documents in that profile.

So the problem is I click a link and open up a candidate profile one page, and without closing the this page I open another candiate profile in second page. Now I close the second page and tried to upload a document in the first page but it ultimatley uploads into second profile (ie into second page which I already closed). but when I refresh the first page and upload, it correctly goes to the first page. Any idea as to why its happening. Is it a browser caching issue or a JSF problem? please suggest me a solution.