Submit HTML form and redirect.

I have build a form using the wizard below: 

https://mhub.quickbase.com/db/6mztyxu8?act=DBPage&pagename=formWizard.html&baseRealm=mhub.qu...

I added to my website, but when they submit the form, it does NOT redirect. The page completely goes blank. It does populate into my table in the app. 
 Also, I would like to have a "Thank you" message after I submit.

Here is the code if someone can help me? What else is missing?



<h2>SOLICITA??O DE PROPOSTA</h2><form name=qdbform method=POST onsubmit='return validateForm(this)' encType='multipart/form-data' action=https://mhub.quickbase.com/db/bm7dd2wmm?act=API_AddRecord&apptoken=cwfcy7gdzqrsyncqbi2bn4u4kr>;
<input type=hidden name=fform value=1>
<table>


<tr><td class=m>Nome Fantasia:</td>
<td class=m><input type=text size=40 name=_fid_60 ></td></tr>

<tr><td class=m><font color=red size=+1>* </font>CNPJ:</td>
<td class=m><input type=text size=40 name=_fid_56 ></td></tr>

<tr><td class=m><font color=red size=+1>* </font>Faturamento Total:</td>
<td class=m><input type=text size=10 name=_fid_41 ></td></tr>

<tr><td class=m><font color=red size=+1>* </font>Valor do ticket m?dio:</td>
<td class=m><input type=text size=10 name=_fid_43 ></td></tr>

<tr><td class=m><font color=red size=+1>* </font>D?bito</td>
<td class=m><input type=text size=10 name=_fid_45 ></td></tr>

<tr><td class=m><font color=red size=+1>* </font>Cr?dito a vista</td>
<td class=m><input type=text size=10 name=_fid_46 ></td></tr>

<tr><td class=m>Cr?dito Parcelado 2 a 6 parcelas</td>
<td class=m><input type=text size=10 name=_fid_47 ></td></tr>

<tr><td class=m>Cr?dito Parcelado 7 a 12 parcelas</td>
<td class=m><input type=text size=10 name=_fid_48 ></td></tr>

<tr><td class=m>% de vendas em debito?</td>
<td class=m><select  name=_fid_57 ><option>0%</option>
<option>10%</option>
<option>20%</option>
<option>30%</option>
<option>40%</option>
<option>50%</option>
<option>60%</option>
<option>70%</option>
<option>80%</option>
<option>90%</option>
<option>100%</option>
</select></td></tr>
<tr><td class=m>% de vendas em credito?</td>
<td class=m><select  name=_fid_58 ><option>0%</option>
<option>10%</option>
<option>20%</option>
<option>30%</option>
<option>40%</option>
<option>50%</option>
<option>60%</option>
<option>70%</option>
<option>80%</option>
<option>90%</option>
<option>100%</option>
</select></td></tr>
<tr><td class=m>Realiza antecipa??o das vendas?</td>
<td class=m><select  name=_fid_51 ><option>Nao</option>
<option>Sim</option>
</select></td></tr>
<tr><td class=m>Qual a taxa atual de antecipa??o?</td>
<td class=m><input type=text size=40 name=_fid_61 ></td></tr>

<tr><td class=m>Com qual adquirente trabalha atualmente?</td>
<td class=m><input type=text size=40 name=_fid_72 ></td></tr>
<tr><td class=m>Nome</td>
<td class=m><input type=text size=40 name=_fid_62 ></td></tr>
<tr><td class=m>Sobrenome</td>
<td class=m><input type=text size=40 name=_fid_63 ></td></tr>
<tr><td class=m><font color=red size=+1>* </font>Email:</td>
<td class=m><input type=text size=40 name=_fid_71 ></td></tr>
<tr><td class=m><font color=red size=+1>* </font>Telefone Celular</td>
<td class=m><input type=text size=40 name=_fid_55 ></td></tr>
<tr><td class=m>Representante PagueCard</td>
<td class=m><input type=text size=40 name=_fid_64 ></td></tr>
</table><input type=hidden name=rdr value='http://www.paguecard.com'>;
<input type=submit value=Save>
</form>
<br />Powered by PAGUECARD SOLUCOES DE PAGAMENTOS <a href="http://www.paguecard.com/"></a>;
<font color=red>* CAMPOS OBRIGATORIOS</font>




<script lang="javascript">
function CheckForOther (item, origlen)
{
var sitem = item.options[item.selectedIndex];

if (item.selectedIndex == (item.length - 1))
{
var val = prompt ("ADD A NEW CHOICE:", "");

if (val == null)
item.selectedIndex = 0;
else
{
var slen = item.length;

if (slen == origlen+1){
item.options[slen] = new Option (sitem.text, sitem.value);
                        }

item.options[item.length-2].text = val;
item.options[item.length-2].value = val;
item.selectedIndex = item.length-2;
}
}
}



</script>
<script lang=javascript>
function validateForm(theForm)
{
if(theForm._fid_56.value == "")
{
alert('Please enter a value for the "CNPJ:" field.');
theForm._fid_56.focus();
return (false);
}
}

</script>