Missing graphic

[Legacy_Staff]

I'm building a site for a friend.
There's no payment involved, it's just a favour.

However, I'm having a problem:-
I have an image at the end of the page.
It shows up in wysiwygs and browsers offline but, soon as I put it online, it disappears and all I get is the little white box with a red 'x' showing where it would have been.

Now, I have a clue to what the problem is, but I don't understand it.
My clue is;
When I look at the code offline, the page ends with "/html", as it should do.
But, when I view the code of the page online, "/html" is accompanied by:-

</html>
<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 guessing that this is what's affecting the disappearance of my jpeg but I can't figure out why it's coming up. I've re-written the page and the graphic several times but every time I load it up, this code always appears on the online page.

Any ideas?
I can't provide a url yet I'm afraid, but the code is above so it shouldn't be necessary.

[Legacy_Staff]

Well, two developments.
1) I fixed it by going back to the original design, slicing it all up and making use of javascript. Works better than I intended now.


2) For anyone else with this predicament, this may explain why.

JavaScript Errors about 'SymRealWinOpen'

If you're receiving popup dialogs reporting that 'SymRealWinOpen' is undefined, then somewhere down the line, you're experiencing the effects of Symantec's NIS (Norton Internet Security) Popup and Ad Blocking software. When this program sees a webpage contain key bits of HTML code, it substitutes in some dummy code to prevent ads and popups. If you're a webmaster working on code for a website, you might find that this code gets glued in for you, even though you don't want it to - meaning that when other surfers come across it, they'll see the frustrating JavaScript error. The trick seems to be to turn off Norton's Ad Blocking and popup stopper functionality (although this is a shame, as it has it's uses). Why Norton should decide to annoy webmasters by adding this extra code is anyone's guess, but I'm sure it's all very clever! If you're just surfing and see this error message, contact the webmaster of the site in question - they'll probably want to know that their ad stopper has messed with their code, and is creating errors.