The webpage you are viewing is trying to close this window warning in Internet Explorer

Question

Hi,

i have a login page and if login is sucessfull,i open a homepage as popup.In IE 6.0,i dont come across a problem but IE.7.0 shows me an alert "The webpage you are viewing is trying to close this window.Do you want to close the window?".When i add the codes to hinder it,now IE 7.0 doesnt give me alert but IE 6.0 gives same problem.How can i solve this problem?

                    Dim strScript As String = "<script language= ""javascript"">window.open('" & Class.cls_LU_PARAMETRE.Deger("START_PAGE") & "','" & Now.ToString("ddMMyyyyHHmmss") & "','resizable=1,width=1015,height=700,left=0,top=0,scrollbars=1,status=1');</script>"
Me.RegisterStartupScript("start", strScript)

I add this code to hinder IE 7.0 warning

       Dim s As String
    s = "<script language= ""javascript"">"
            s += " {var oMe = window.self;oMe.open('','_self',''); oMe.close();}"
    s += " </script>"""
  Me.Page.RegisterStartupScript("close", s)

'****************

Answer 1

It's a security feature. After all, how would you like it if some website you went to decided to close your browser window?

The most correct way to avoid this is to have opened the browser window from javascript. When you do that, the parent window is allowed to close the window without asking the user.

Answer 2

You can fix this in IE by setting the self.opener property:

self.opener = this;
self.close();

EDIT: it looks like MS may have fixed this bug (it was always a bug exploit). Looks like you're out of luck unless you open the window originally yourself, and close it from the same page that opens it.

Answer 3

another solution

window.opener = "";
window.close();

Answer 4

This works pretty well when you need a work-around:

http://dotnetslackers.com/community/blogs/haissam/archive/2007/04/20/Javascript_3A00_-Close-window-without-the-prompt-message-in-IE7.aspx