JavaScript Solution: How to reload a frame content from another frame

I happened to work with a scenario that:

I have three frames named top,contents[leftpane], and Main. Iam showing my user id at top frame using a user control. In main frame by using an Update profile page i am allowing the user to update his profile. Upon updation his/her name might get changed. If it changed i have to update his name at the top frame user control.

I just need a way to reload the content of top frame through javascript.

Waiting for a favourable solution!
Thank you.