In my project, I have a text box and a button. when button is clicked (text of TextBox is "Unbelievable"), Page will be direct to "abc.aspx".
But the problem is text box.
I standing at abc.aspx and press Back button of browser.
If the browser is IE, text of TextBox is "Unbelievable".
If the browser is FF, text of TextBox is "".

I don't know what is happening in my web page.
Thank you for any help.