<SCRIPT LANGUAGE="JavaScript">
function viewMyPhoto(val,e)
{
	var obj;

	obj = document.getElementById('thumb_wnd');	
	obj.style.left = e.clientX+5+document.body.scrollLeft;
	obj.style.top = e.clientY+5+document.body.scrollTop;
	obj.style.display = '';
	obj.innerHTML = "<img src='"+val+"' style='border:#8E8A8B 1px solid;'>";
}

function hideMyPhoto()
{
	var obj = document.getElementById('thumb_wnd');
	obj.style.display = 'none';
}

document.write("<div id='thumb_wnd' style='display:none; position:absolute; width:120px; height:120px; z-index:5;'></div>");
</SCRIPT>
<img src='a.jpg' width='32' height='32'  onmousemove='viewMyPhoto("b.gif",event);' onmouseout='hideMyPhoto();'>