da se poate ... am facut un exemplu.
<html>
<head>
<script>
function arata(idDiv)
{
document.getElementById(idDiv).style.display='bloc k';
}
function ascunde(idDiv)
{
document.getElementById(idDiv).style.display='none ';
}
</script>
<style>
a
{
cursor:pointer;
margin:5px;
float:left;
border:1px solid red;
}
.box
{
display:none;
}
</style>
</head>
<body>
<a onmouseover="arata('boxu1');" onmouseout="ascunde('boxu1');">Arata primu </a>
<a onmouseover="arata('boxu2');" onmouseout="ascunde('boxu2');">Arata 2 </a>
<a onmouseover="arata('altdiv');" onmouseout="ascunde('altdiv');">Arata 3 </a>
<br /><br />
<div id="boxu1" class="box">bla ba lbas dsaf da</div>
<div id="boxu2" class="box">bal bas basd fa </div>
<div id="altdiv" class="box">fsdfdsa</div>
</body>
</head>
Demo:
http://s3by.info/javascript.html