Un pezzo di codice del form ce l'ho io, nel senso che ho creato io i vari campi e il bottone punta ad un link. (ho anche i vari file .js):
<script type="text/javascript" src="https://code.jquery.com/ui/1.11.1/jquery-ui.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.11.1/i18n/jquery-ui-i18n.min.js"></script>
<script type="text/javascript" src="dateUtil.js"></script>
<script type="text/javascript" src="SearchBox.js"></script>
<script type="text/javascript" src="jquery.maskedinput-1.3.min.js"></script>
<div id="pass-container">
<form action="https://webhotels.passepartout.cloud/webbooking.aspx" method="get" target="_blank">
<input type="hidden" name="Albergo" value="167264" />
<input type="hidden" name="Lingua" value="0" />
<input type="hidden" name="OidPortaleXAlbergo" value="9471" />
<div style="" class="campoform campoformdate">
<label for="dataArrivo">
Data di Arrivo</label><br />
<input style="width: 90%; height: 30px;" type="text" class="editorDateTime" value="" name="Arrivo"
id="dataArrivo" />
<>
<div style="display: none; margin-left: 0px;">
<label for="cmbNotti">
Notti:</label><br />
<select name="Notti" id="cmbNotti">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
<option value="14">14</option>
<option value="15">15</option>
<option value="16">16</option>
<option value="17">17</option>
<option value="18">18</option>
<option value="19">19</option>
<option value="20">20</option>
<option value="21">21</option>
<option value="22">22</option>
<option value="23">23</option>
<option value="24">24</option>
<option value="25">25</option>
<option value="26">26</option>
<option value="27">27</option>
<option value="28">28</option>
<option value="29">29</option>
<option value="30">30</option>
<option value="31">31</option>
<option value="32">32</option>
<option value="33">33</option>
<option value="34">34</option>
<option value="35">35</option>
<option value="36">36</option>
<option value="37">37</option>
<option value="38">38</option>
<option value="39">39</option>
<option value="40">40</option>
<option value="41">41</option>
<option value="42">42</option>
<option value="43">43</option>
<option value="44">44</option>
<option value="45">45</option>
<option value="46">46</option>
<option value="47">47</option>
<option value="48">48</option>
<option value="49">49</option>
<option value="50">50</option>
<option value="51">51</option>
<option value="52">52</option>
<option value="53">53</option>
<option value="54">54</option>
<option value="55">55</option>
<option value="56">56</option>
<option value="57">57</option>
<option value="58">58</option>
<option value="59">59</option>
<option value="60">60</option>
</select>
<>
<div style="" class="campoform campoformdate">
<label for="dataPartenza">
Data di Partenza</label><br />
<input style="width: 90%; height: 30px;" type="text" class="editorDateTime" value="" name="Partenza"
id="dataPartenza" />
<>
<div style="margin-top: 0px; display: none;">
<label for="cmbCamere">
Camere:</label><div>
<>
<select style="" name="Camere" id="cmbCamere">
<option selected="selected" value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
</select>
<>
<div class="campoform campoformpersone">
<div class="divClientiCamera" indicecamera="1">
<div class="colAdulti">
<input type="hidden" value="0" name="PersoneXCamera[0].Indice" />
<label>
Persone:
</label>
<br />
<select class="cmbQuantitaAdulti" name="PersoneXCamera[0].Adulti" id="cmbQuantitaAdulti1">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
</select>
<>
<>
<>
<input type="text" name="CodicePromozione" value="" style="display: none; width:92%; margin-top:15px" placeholder="Codice promozione" />
<div style="height: 30px;" class="campoform campoformbtn">
<label>
</label>
<a href="#" target="_blank" class="btn btn-default btn-block primary" id="btnPrenota">
<i class="fa fa-search"></i>
Cerca e Prenota!
</a>
<>
</form>
<>
In effetti se qui cambio il target tra blank e self funzionano:
<form action="https://webhotels.passepartout.cloud/webbooking.aspx" method="get" target="_blank">
quindi pensavo bastasse dargli un target diverso, ma non me ne intendo di iframe..