cosi:
codice:
<html>

	<head>
		<script type="text/javascript" language="JavaScript1.2">
		function resetta()
{
window.document.frmPreventivo.reset()
document.frmPreventivo.elements['item[5]'][1].disabled = false;
}

function check()
{
var opz1 = document.frmPreventivo.elements['item[0]']
var opz2 = document.frmPreventivo.elements['item[5]']
if(opz1[2].checked && !opz2[0].checked && !opz2[1].checked){alert("ATTENZIONE\nSelezionare il supporto"); return false;}else
if(opz1[3].checked && !opz2[0].checked && !opz2[1].checked){alert("ATTENZIONE\nSelezionare il supporto"); return false;}else
if(opz1[0].checked && opz2[0].checked || opz2[1].checked){alert("ATTENZIONE\nSelezionare il piano"); return false;}else
	if (!document.frmPreventivo.contratto.checked)
		{alert ("E' necessario autorizzare le condizioni contrattuali") ; return false}
	}
	function ImpostaPiano(RadioValue){
	if(RadioValue == 2 || RadioValue == 5){
	document.frmPreventivo.elements['item[5]'][0].checked = true;
	document.frmPreventivo.elements['item[5]'][1].disabled = true;
	}else{
	document.frmPreventivo.elements['item[5]'][0].checked = false;
	document.frmPreventivo.elements['item[5]'][1].disabled = false;
	}
}
</script>
		<link href="stile.css" type="text/css" rel="stylesheet">
	</head>

	<body bgcolor="#ffffff">
		<table cellspacing="1" cellpadding="0" width="435" border="0" height="364">

			<form name="frmPreventivo" action="configurato.asp" method="post">
				<input type="hidden" value="1" name="frmAction"> <input type="hidden" value="<%=wdominio%>" name="Dominio"> <input type="hidden" value="<%=wext%>" name="ext"> <input type="hidden" value="<%=StrTipo_Operazione%>" name="tipo_operazione"><tbody>
					<tr height="26">
						<td width="433" height="26" class="H3">
							<div align="center">
								
													Registra il tuo dominio e configura il servizio

							</div>

						</td>
					</tr>
					<tr>
						<td valign="top" width="433">
							<div align="center">
								<table height="335" cellspacing="0" cellpadding="0" width="420" border="0" class="testo">
									<tbody>
										<tr height="167">
											<td valign="top" width="418" height="167">

												<table cellspacing="2" cellpadding="2" width="423" border="0">
													<tbody>
														<tr height="18">
															<td class="H1" colspan="3" bgcolor="#eeeeee" width="415" height="19"><font color="black">Dominio: www.<%=wdominio1%></font></td>
														</tr>
														<tr height="13">
															<td class="H1" colspan="3" bgcolor="#0d3f96" width="415" height="13">

																<div>
																	Tipologia Servizio </div>
															</td>
														</tr>
														<tr height="19">
															<td class="H1" bgcolor="#5791c6" width="242" height="19"><input class="noinput" type="radio" value="1" name="item[0]" checked> Solo dominio</td>
															<td class="H1" bgcolor="#eeeeee" width="34" height="19"></td>

															<td class="H5" valign="middle" bgcolor="#eeeeee" width="127" height="19">
																<div align="right">
																	<font color="black"> </font></div>
															</td>
														</tr>
														<tr height="14">
															<td class="H1" bgcolor="#5791c6" width="242" height="14"><input class="noinput" type="radio" value="2" name="item[0]" onclick="ImpostaPiano(this.value)"> Basic Plain</td>

															<td class="H1" bgcolor="#eeeeee" width="34" height="14">[img]images/icon_linux.gif[/img]</td>
															<td class="H5" valign="middle" bgcolor="#eeeeee" width="127" height="14">
																<div align="center">
																	Solo linux</div>
															</td>
														</tr>
														<tr height="14">
															<td class="H1" bgcolor="#5791c6" width="242" height="14"><input class="noinput" type="radio" value="3" name="item[0]" onclick="ImpostaPiano(this.value)"> Silver Plain</td>

															<td class="H1" bgcolor="#eeeeee" width="34" height="14">[img]images/icon_linux.gif[/img][img]images/icon_win.gif[/img]</td>
															<td class="H5" valign="middle" bgcolor="#eeeeee" width="127" height="14">
																<div align="center">
																	Linux e windows</div>
															</td>
														</tr>
														<tr height="14">
															<td class="H1" bgcolor="#5791c6" width="242" height="14"><input class="noinput" type="radio" value="4" name="item[0]" onclick="ImpostaPiano(this.value)"> Golden Plain</td>

															<td class="H1" bgcolor="#eeeeee" width="34" height="14">[img]images/icon_linux.gif[/img][img]images/icon_win.gif[/img]</td>
															<td class="H5" valign="middle" bgcolor="#eeeeee" width="127" height="14">
																<div align="center">
																	Linux e windows</div>
															</td>
														</tr>
														<tr height="14">
															<td class="H1" bgcolor="#5791c6" width="242" height="14"><input class="noinput" type="radio" value="5" name="item[0]" onclick="ImpostaPiano(this.value)"> Hosting XXL</td>

															<td class="H1" bgcolor="#eeeeee" width="34" height="14">[img]images/icon_linux.gif[/img]</td>
															<td class="H5" valign="middle" bgcolor="#eeeeee" width="127" height="14">
																<div align="center">
																	Solo linux</div>
															</td>
														</tr>
													</tbody>
												</table>

											</td>
										</tr>
										<tr height="73">
											<td valign="top" width="418" height="73">
												<table cellspacing="2" cellpadding="2" width="422" border="0">
													<tbody>
														<tr height="13">
															<td class="H1" colspan="2" bgcolor="#0d3f96" width="414" height="13">
																<div class="lista2p">

																	Piattaforma</div>
															</td>
														</tr>
														<tr>
															<td class="H1" bgcolor="#5791c6" width="282"><input class="noinput" type="radio" value="2" name="item[5]"> Supporto Linux</td>
															<td valign="bottom" bgcolor="#eeeeee" width="126">

																<div align="center">
																	[img]images/icon_linux.gif[/img]</div>
															</td>
														</tr>
														<tr>
															<td class="H1" bgcolor="#5791c6" width="282"><input class="noinput" type="radio" value="1" name="item[5]"> SupportoWindows</td>
															<td valign="bottom" bgcolor="#eeeeee" width="126">

																<div align="center">
																	[img]images/icon_win.gif[/img]</div>
															</td>
														</tr>
													</tbody>
												</table>
											</td>
										</tr>
										<tr height="45">

											<td valign="top" width="418" height="45">
												<table cellspacing="2" cellpadding="2" width="422" border="0">
													<tbody>
														<tr height="13">
															<td class="H1" colspan="2" bgcolor="#0d3f96" width="414" height="13">
																<div class="lista2p">
																	Servizi aggiuntivi</div>
															</td>

														</tr>
														<tr>
															<td class="H1" bgcolor="#5791c6" width="281"><input class="noinput" type="radio" value="1" name="item[3]"> BakeUp mensile</td>
															<td class="H1" valign="bottom" bgcolor="#eeeeee" width="127">
																<div align="right">
																	<font color="black">60,00 € / anno </font></div>

															</td>
														</tr>
													</tbody>
												</table>
											</td>
										</tr>
										<tr height="20">
											<td valign="middle" width="418" height="20"><input type="checkbox" name="contratto" value="autorizzata">Condizioni contrattuali</td>

										</tr>
										<tr height="30">
											<td valign="middle" width="418" height="30">
												<div align="center">
													<input onclick="javascript:return check();" type="image" value=Invia name=B1 src="images/invia.gif" tabindex="10"> [img]images/reset.gif[/img]</div>
											</td>
										</tr>
									</tbody>

								</table>
							</div>
						</td>
					</tr>
				</tbody>
			</form>
		</table>
		

</p>
	</body>

</html>