Norton Internet security adds to web page

[LuiWoh]

While I was viewing source on one of my pages, I noticed some JavaScript that I did not add. My first thought was it was added by the Jaguar servers but that is not true. I looked around the web and found it is added because I am using Norton Internet Security 2003. They add the following to EVERY page I view:

<script language="JavaScript">
<!--

function SymError()
{
return true;
}

window.onerror = SymError;

var SymRealWinOpen = window.open;

function SymWinOpen(url, name, attributes)
{
return (new Object());
}

window.open = SymWinOpen;

//-->
</script>

Then later in the document it says:
<script language="JavaScript">
<!--

window.open = SymRealWinOpen;

//-->
</script>

Not being a javascript guru, Can anyone tell me what this exactly does and how is it they can add to every web page without many people saying anything?

[Raven]

Do you have ad-blocking enabled?

[empty]

Yeah, that's part of Norton's privacy/popup blocking thing..there are TONS of threads in different news groups about it..

[LuiWoh]

Thanks for the replies, I have been looking at newsgroups to find out more. Also I do have ad blocking running.

[Connie]

Zone Alarm does the same thing when useing the privacy settings.