iframe controls

Hi all ,

I have a main Pgae called ( Default.aspx),In that main Page i used Iframe,Sourse file of Iframe is Page2.aspx,

Now I want to Access the main Page controls in the Iframe Page , and Iframe Page controls in main Page.

for Example

If a Lable1 is Present in the main Page,Then i want access the lable1 in the Iframe Page.

 

If it is posible , Please suggest me,

 

many Thanks ,

mallikarjun
...