Celdas desplegables,

[Fabu_dina]

<SCRIPT language="javascript">
frm = document.addr;
function EC(TheTR,img)
{
var DataTR = eval('document.all.' + TheTR);
if (DataTR.style.display=="block" || DataTR.style.display=="" )
{
DataTR.style.display="none";
img.children[1].children[0].src='../images/general/arr.gif';
}
else
{
DataTR.style.display="block";
img.children[1].children[0].src='../images/general/up.gif';
}
}
</script>


Dentro de tu pagina

<table border=0 cellpadding=0 cellspacing=0 width="570" style="border:1px solid #0000A0">
<tr bgcolor=#0000A0 height= 24 onclick= "EC('Eaddresses',this);" style="cursor:hand">
<td bgcolor="#0000A0" style="padding-left:10px"><img src="../images/general/informa.gif" width="15" height="12" hspace="1" border=0 align="absmiddle"> <span class="marco_titu Estilo4">Datos Distribuidor</span> </td>
<td align=right style="padding-right:7px"><img src="../images/general/arr.gif" border=0 align="absmiddle" hspace="1"></td>
</tr>
<tr id="Eaddresses" style="display:none";>
<td colspan=2 style="padding:9 10 14 10"><table width="500" border="0" align="center" cellpadding="0" cellspacing="3">
<tr>
<td width="159" class="marco_texto"><div align="left" class="imagen_cabecera">Nombre Distribuidor </div></td>
<td width="332"><div align="left">
<input name="Nom_distribuidor" type="text" class="tabla_empresapcs" id="Nom_distribuidor" size="50" onKeyUp="this.value = this.value.toUpperCase();">
</div></td>
</tr>
</table></td>
</tr>
</table>