HTML - Unidentified Symbol

Hello. Today i started up a project as a test, to see if i could accomplish something. I took some HTML and chopped some parts off untill i isolated what i wanted and had it working alone by itself on a webpage. Towards the bottom (i had everything figured out) i noticed this weird code that came AFTER EVERYTHING (even </HTML>).

So i deleted it, saved, everything still worked fine. I've seen this code pop up elsewhere but never worried about it, but i'm interested now

Here is the code:
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.onunload = SymOnUnload;
}

SymRealOnLoad = window.onload;
window.onload = SymOnLoad;

//-->
</script>

I'm wondering if someone can tell me what this does and what it's purpose is.

Thanks in advance,
shinta

How do I get the little symbol to appear before the date 2010? the date for 2011 has one ,but I can't get one for 2010.I can't find it in the code I've saved.Thanks
http://www.imagebam.com/image/da0c19113490618
<h3><strong><strong>2010</strong></strong></h3>
<blockquote>
<strong><strong><a href="http://www.youtube.com/user/RockandRollIncTV" target="_blank">Rock & Roll,Inc</a><br>
<a href="http://www.examiner.com/horror-in-national/exclusive-interview-with-actress-kelli-maroney-1" target="_blank">Horror Examiner Interview</a><br>
</strong></strong></blockquote

heyall,
how do I go about putting a copyright symbol between a paragraph of wriitng in place of the @ symbol?
HTML Code:

    <p>The Amazing Company, My very long addresss, post code @The Amazing Company 2011</p>

I found this little dohicky ▼ = " & # 9660 ;" (no spaces in between the symbols and number) Code:

this would be the code if it was in a url =  %26%239660%3B

(sorry I had to write it like this cuz if I put the original code in it looks like an arrow) at www.javascriptkit.com in there html. it is a downward black arrow without tail
I was wondering if someone knows the other codes for:
left black arrow without tail, upward black arrow without tail, and right black arrow without tail?
if so can you show me please? I've search the internet every-where and cannot seam to find any ref to the right black arrow without tail or the others.
thank you in advance!