Retornar o valor de função na mesma PG

olá galera, estou criando uma págna onde tenho um formulário de cadastro onde peço varias informações e o cep, onde o usuário digita o cep e ao clicar em pesquisar tem que retornar os dados do cep, meu problema é que ele me redireciona para pagina em branco, nao mostrando o resultado, vou postar como está atualmente a página.... <%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%><link href="scripts/estilo.css" rel="stylesheet" type="text/css">Function ConsCep() Set Obj = CreateObject("Msxml2.XMLHTTP") StrCEP = "05660000" strURL = "[http://www.correios.com.br/servicos/falecomoscorreios/ctBuscaEndereco.cfm?cep="](http://www.correios.com.br/servicos/falecomoscorreios/ctBuscaEndereco.cfm?cep=) & strCEP Obj.open "GET",strURL,False Obj.send strHtml = Obj.responseText a = split(strHtml,"'") Endereco = a(1) Bairro = a(3) Cidade = a(5) Estado = a(7) End Function %><script language="JavaScript" type="text/JavaScript"><!--function MM_reloadPage(init) { //reloads the window if Nav4 resized if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) { document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }} else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();}MM_reloadPage(true);//--></script><style type="text/css"><!--.style1 {font-weight: bold}--></style><div id="Layer2" style="position:absolute; left:466px; top:200px; width:200px; height:254px; z-index:6"></div><form action="grava.asp?tipo=config" name="configuracao" id="configuracao" method="get"><div id="Layer5" style="position:absolute; left:17px; top:458px; width:648px; height:18px; z-index:5"> <div align="center"> <fieldset> <input name="Submit4" type="submit" class="btn" value="Grava">       <input name="Submit23" type="reset" class="btn" value="Desfazer"> </fieldset> </div></div><div id="Layer1" style="position:absolute; left:14px; top:74px; width:652px; height:112px; z-index:1"><fieldset><legend class="texto2">Dados Cadastrais</legend><table width="651" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="90">Código</td> <td width="121"><input name="textfield" type="text" size="6" maxlength="5"></td> <td width="20"> </td> <td width="175" align="center" valign="top">Grupo</td> <td width="20" align="center" valign="top"> </td> <td width="225" align="center" valign="top">Opções</td> </tr> <tr> <td width="90">Departamento</td> <td><select name="select"> </select></td> <td width="20"> </td> <td width="175" rowspan="4" align="left" valign="top"><textarea name="textfield2" cols="25" rows="4"></textarea></td> <td width="20" align="left" valign="top"> </td> <td width="225" rowspan="4" align="left" valign="top"> </td> </tr> <tr> <td width="90"> </td> <td> </td> <td width="20"> </td> <td width="20" align="left" valign="top"> </td> </tr> <tr> <td width="90"> </td> <td> </td> <td width="20"> </td> <td width="20" align="left" valign="top"> </td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> </tr></table></fieldset></div><div id="Layer3" style="position:absolute; left:15px; top:202px; width:445px; height:87px; z-index:3"><fieldset><legend class="texto2">Dados Pessoais</legend><table width="441" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="441"><table border="0" cellspacing="0" cellpadding="0"> <tr> <td width="42">Nome</td> <td width="245"><input name="textfield4" type="text" size="40"></td> <td width="11"> </td> <td width="70">Dta.Nasc.</td> <td width="66"><input name="textfield3" type="text" size="11" maxlength="10"></td> </tr> </table></td> </tr> <tr> <td width="441"><table width="437" border="0" cellpadding="0" cellspacing="0"> <tr> <td width="44">Sexo</td> <td width="183"><input name="radiobutton" type="radio" value="radiobutton"> Masculino <input name="radiobutton" type="radio" value="radiobutton"> Femenino</td> <td width="10"> </td> <td width="82">Estado Civil </td> <td width="118"><select name="select2"> <option>Solteiro(a)</option> <option>Casado(a)</option> </select></td> </tr> </table></td> </tr> <tr> <td width="441"><table width="441" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="40">CPF</td> <td width="78"><input name="textfield5" type="text" size="13"></td> <td width="10"> </td> <td width="27">RG</td> <td width="90"><input name="textfield6" type="text" size="14" maxlength="13"></td> <td width="10"> </td> <td width="89">Expedido por </td> <td width="97"><input name="textfield7" type="text" size="15"></td> </tr> </table></td> </tr></table></fieldset></div><div id="Layer4" style="position:absolute; left:15px; top:295px; width:445px; height:159px; z-index:4"><fieldset><legend class="texto2">Dados para contato</legend><table width="440" border="0" cellspacing="0" cellpadding="0"> <tr> <td><table width="433" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="37">Cep</td> <td width="109"><input name="textfield11" type="text" size="11"> <input type="button" name="Button" value="Ok" onClick=<%ConsCep()%>></td> <td width="44">Cidade</td> <td width="181"><input name="textfield12" type="text" size="30" value=<%=Cidade%>></td> <td width="28">UF</td> <td width="34"><input name="textfield13" type="text" size="5" value=<%=Estado%>></td> </tr> </table></td> </tr> <tr> <td><table width="440" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="62">Endereço</td> <td width="203"><input name="textfield8" type="text" size="33" value=<%=Endereco%>></td> <td width="23">Nº</td> <td width="43"><input name="textfield9" type="text" size="7"></td> <td width="50">Compl.</td> <td width="59"><input name="textfield10" type="text" size="7"></td> </tr> </table></td> </tr> <tr> <td><table width="200" border="0" cellspacing="0" cellpadding="0"> <tr> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> </table></td> </tr> <tr> <td> </td> </tr></table></fieldset></div></form><table width="674" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="727" height="50" align="left" valign="top" background="img/faixa.jpg" class="texto">Manutenção de Usuários </td> </tr> <tr> <td> </td> </tr></table>