Form won't submit when showing certain fields

I am trying to create a drop down menu that allows a user to select which area they would like to login to. Currently, the drop down feature works and hides whichever areas the user is not logging into and shows only the area that they have selected. Using just the form without the dropdown works great and opens a new window while also logging the user in to the system. However, when I add the dropdown menu and surround the form in tags, it allows me to enter the data but does not process the data.

If possible I would also like to have the form open a new tab in the current browser window(not in a completely new window).

-I cannot change the forms at all besides things that won't matter because they have been given to me from an external source.

Here is my code:

$(document).ready(function() {
  toggleFields(); //call this first so we start out with the correct visibility depending on the selected form values
  //this will call our toggleFields function every time the selection value of our repository field changes
  $("#member").change(function() {
    toggleFields();
  });

});
//this toggles the visibility of the 3 different forms depending on which repository the user is logging into.
function toggleFields() {
  if ($("#member").val() == 1)
    $("#depo").show();
  else
    $("#depo").hide();
  if ($("#member").val() == 2)
    $("#records").show();
  else
    $("#records").hide();
  if ($("#member").val() == 3)
    $("#reporter").show();
  else
    $("#reporter").hide();
}

<script src="http://ift.tt/1qRgvOJ"></script>

<select id="member" name="member">
  <option value="0">---</option>
  <option value="1">Deposition Repository</option>
  <option value="2">Records Repository</option>
  <option value="3">Reporter Area</option>
</select>

<div id="depo">
  <p>Login to Access your Deposition Repository</p>
  <p>
    <script type="text/javascript" src="http://ift.tt/1P3HeQs"></script>
    <form name="frmrbwebattorney" method="post" action="http://ift.tt/1P3Hdw0">
      User ID:
      <input type="text" name="rbwebuserid" style="width:130px;" value="" maxlength=30>Password:
      <input type="password" name="rbwebpassword" style="width:130px;" value="" maxlength=65 onkeypress="javascript:if(event.keyCode ==13) login(document.frmrbwebattorney,1);">
      <INPUT type="button" value="Log In" style="font-size:11px;" style="width:64px" onclick="javascript:login(document.frmrbwebattorney,1);" id=btnptarbweb name=btnptarbweb>
      <INPUT type="hidden" name="appname" value="">
      <INPUT type="hidden" name="os" value="">
    </form>
  </p>
</div>

<div id="records">
  <p>Login to Access your Records Repository.</p>
  <p>
    <script type="text/javascript" src="http://ift.tt/1gHeNwv"></script>
    <form name="frmrbwebattorney" method="post" action="http://ift.tt/1P3HeQu">
      User ID:
      <input type="text" name="rbwebuserid" style="width:130px;" value="" maxlength=16>Password:
      <input type="password" name="rbwebpassword" style="width:130px;" value="" maxlength=65 onkeypress="javascript:if(event.keyCode ==13) login(document.frmrbwebattorney,1);">
      <INPUT type="button" value="Log In" style="font-size:11px;" style="width:64px" onclick="javascript:login(document.frmrbwebattorney,1);" id=btnptarbweb name=btnptarbweb>
      <INPUT type="hidden" name="appname" value="">
      <INPUT type="hidden" name="os" value="">
    </form>
  </p>
</div>

<div id="reporter">
  <p>Login to the Reporter Area.</p>
  <p>
    <script type="text/javascript" src="http://ift.tt/1P3HeQs"></script>
    <form name="frmrbwebreporter" method="post" action="http://ift.tt/1gHeNwx">
      User ID:
      <input type="text" name="rbwebuserid" style="width:130px;" value="" maxlength=16>Password:
      <input type="password" name="rbwebpassword" style="width:130px;" value="" maxlength=65 onkeypress="javascript:if(event.keyCode ==13) login(document.frmrbwebreporter,1);">
      <INPUT type="button" value="Log In" style="font-size:11px;" style="width:64px" onclick="javascript:login(document.frmrbwebreporter,1);" id=btnptarbweb name=btnptarbweb>
      <INPUT type="hidden" name="appname" value="">
      <INPUT type="hidden" name="os" value="">
    </form>
  </p>
</div>

Any help will be greatly appreciated!

via Chebli Mohamed