Close Parent window from nested iframe child pages : javascript;

for : IE and FireFox

1:  <script language="javascript" type="text/javascript"> 
2:      function CloseAll() { 
3:        if (top === self) { 
4:          alert('not iframed'); 
5:          if (navigator.appName == "Microsoft Internet Explorer") { 
6:            self.close(); 
7:          } 
8:          else { 
9:          var respnseVal = confirm("Do you wan't to close this window"); 
10:            if (respnseVal) {             
11:              netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserWrite");             
12:              window.open('', '_self'); 
13:              window.close(); 
14:            } 
15:          } 
16:        } 
17:        else { 
18:          alert('iframed'); 
19:          if (navigator.appName == "Microsoft Internet Explorer") { 
20:            top.close(); 
21:          } 
22:          else {           
23:            var respnseVal = confirm("Do you wan't to close this window"); 
24:            if (respnseVal) { 
25:              netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserWrite"); 
26:              top.open('', '_self'); 
27:              top.window.close(); 
28:            } 
29:          } 
30:        } 
31:      }     
32:    </script>