Empty block in Drupal

I have a link in "content top" that I don't want. I don't even know how I managed to put it there.
If you look the front page on my test site:
you should see an empty section above the first post and below the primary links.

If you look at any other page you should see a link to the front (Home) page. Here for instance:
I assume that link is responsible for the empty section on the front page. How to get rid of it?

Email me: alan at mywitsend dot co dot nz if you need to log in as admin.

I'm using the Sky theme, but the offending link shows up in all themes.
If I go to Administration/Blocks there are no blocks in the "content top" region.

I'm a very green Drupal newbie.

LVL 24
Alan HendersonRetired marine engineerAsked:
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you have a .mission class that is not being used in that div. on the home page only. That div id doesn't appear in your other pages. so look for that div in your home page setup.

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Alan HendersonRetired marine engineerAuthor Commented:
thanks TekSupDDG, that's the problem alright. I delete it in firebug and the problem area disappears.
The home link in the other page has nothing to do with the problem, that was just a breadcrumb which I've deactivated now.

Can you tell me how to get rid of that div? I have no idea where to find the HTML for a Drupal PHP page.

do you know if your front page uses the same php file as the rest of your pages? the default page is page.tpl.php I think. Did you alter this page? or create a copy of it and rename it?
Alan HendersonRetired marine engineerAuthor Commented:
You've pinpointed my problem TekSupDDG but your answer reveals to me how little I know, so I'll award the points and ask another question.
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