You can use Javascript to set the CSS style of the header and footer to 'hidden' The difficulty of selecting the right HTML elements will depend on which Livelink version you are running.
Save these two demo html documents to your desktop and open test.html. They should get you started. Also, the access into the IFRAME is dependent on having the IFrame's source come from the same domain, since this is within LL, I assume you won't have any problems due to that.
test.html
----------------
<html>
<head>
<script>
function changeIFrame()
{
var IE = document.all;
var doc = null;
// if contentDocument exists, W3C compliant (Mozilla)
if ( !IE ){
doc = document.getElementById( 'aframe' ).contentDocument;
} else {
// IE
doc = document.frames[ 'aframe' ].document;
}
var imageLink = doc.getElementById( "link2" );
imageLink.style.visibility = "hidden";
}
</script>
</head>
<body onload="changeIFrame();">
text
<iframe id="aframe" src="test2.html"/>
text
</body>
</html>
-------------
test2.html
-------------------
<html>
<body>
<A href="
id="link1">Image1</a><A href="
id="link2">Image2</a><A href="
id="link3">Image3</a>
</body>
</html>