Is This Generated Javascript Supposed To Be There?

Hi all,
I have a site with frames. There is a list in the left hand frame generated by php/MySQL - list.php, and the detail of one of the listed items is shown in the main page - main.php.

While list.php reads each item from the database it generates a clickable link to main.php of the form:

Code:
<a href="javascript:void
(parent.main.location='main.php?id=123');">name123</a>
When list.php comes to the default item, it also generates an autolink of the form:

Code:
<script language="javascript" type="text/javascript">
void(parent.main.location='main.php?id=345');
</script>
Although this works OK, when I look at the generated HTML (using the browser 'source' view) there is the following javascript coding in addition to the above - is this supposed to be there or is it an error?

Code:
<script language="JavaScript">
<!--
function SymError()
{
return true;
}
window.
var SymRealWinOpen = window.open;
function SymWinOpen(url, name, attributes)
{
return (new Object());
}
window.open = SymWinOpen;
//-->
</script>
and ...

Code:
<script language="JavaScript">
<!--
var SymRealOnLoad;
var SymRealOnUnload;
function SymOnUnload()
{
window.open = SymWinOpen;
if(SymRealOnUnload != null)
SymRealOnUnload();
}
function SymOnLoad()
{
if(SymRealOnLoad != null)
SymRealOnLoad();
window.open = SymRealWinOpen;
SymRealOnUnload = window.onunload;
window.
}
SymRealOnLoad = window.onload;
window.
//-->
</script>
Thanks, Jack.