Save and close message

Hi everybody,

I'm developing an iframe which is basically a grid view of accounts.

When a user double click on a company name, a primary contact or any similar information, the CRM window of the correspondant record is opened. My problem is when I change informations in this window and click "Save and close" I get a pop up message"The webpage you are viewing is trying to close this window. Do you want to close the window?".

This is very annoying for my client who want it removed.

Here is an example of how I open the CRM window.

            Dim URL As String = "http://WIN-64QI7GB3GK2/TF/sfa/conts/edit.aspx?id={" & Row.PrimaryContactId.ToString & "}#"
            Process.Start("iexplore.exe", URL)

I tried to look on the web, it's likely someone already have solved this but I didn't find any specific solution so far. That's why I'm asking for your help.

I can provide more informations, thank you in advance ;D.