Position relative top:-8%

Hi at all

Please take a look at this little source code

First I have a full screen image

Then immediately after the copyright into a div that must be into the image
like written at the image bottom

It work best with MSIE but with FF copyright is after the image and not on

Why?

Thank in advance

<img src="mypuppies.jpg"><br><a href="#" onclick="dd()"
style="text-decoration:none"><div
style="background:black;color:yellow;position:rela tive;top:-8%;padding:0.5em;width:25%;">Paul's
puppies copyrihgt</div></a>