ok ho trovato qualcosa...

[CODE]
<script type="text/javascript" language="javascript">
/* Superior Web Systems */
function displayHideBox(boxNumber)
{
if(document.getElementById("LightBox"+boxNumber).s tyle.display=="none") {
document.getElementById("LightBox"+boxNumber).styl e.display="block";
document.getElementById("grayBG").style.display="b lock";
} else {
document.getElementById("LightBox"+boxNumber).styl e.display="none";
document.getElementById("grayBG").style.display="n one";
}
}
</script>
[\CODE]

qui il codice del body:

[CODE]


<div id="LightBox1" class="box_content" style="display:none;">
<div class="titolo" onclick="displayHideBox('1'); return false;" style="margin-top:0 !important;cursorointer; border-bottom:#000 solid 1px">MENU 01</div>

</div>
</div>

<div id="LightBox2" class="box_content" style="display:none;">
<div class="titolo" onclick="displayHideBox('2'); return false;" style="margin-top:0 !important;cursorointer; border-bottom:#000 solid 1px">MENU 02</div>

</div>
</div>

<div id="LightBox3" class="box_content" style="display:none;">
<div class="titolo" onclick="displayHideBox('3'); return false;" style="margin-top:0 !important;cursorointer; border-bottom:#000 solid 1px">MENU 03</div>

</div>
</div>


[\CODE]

adesso funziona ma non ha nessun effetto di fade in fade out.
qualche suggerimento per implementarlo?