Submit form data and go to related page at the same time (within one page)

Hello - have a form with a list box and two text boxes. Wanting to capture the form input as url parameters when the form is submitted and redirect at the same time (kind of like a jump screen?). Here is what I have that does not work because (I assume) the forms don't get submitted prior to the redirect...

<form id="form1" name="form1" method="post" action="">
  <select name="terminal" id="terminal">
    <option value="Select Terminal From List">Select Terminal From List</option>
    <%
While (NOT rs1.EOF)
%>
    <option value="<%=(rs1.Fields.Item("TERMINAL").Value)%>"><%=(rs1.Fields.Item("TERMINAL").Value)%></option>
    <%
  rs1.MoveNext()
Wend
If (rs1.CursorType > 0) Then
  rs1.MoveFirst
Else
  rs1.Requery
End If
%>
  </select>
  <label>
  <input name="startdate" type="date" id="startdate" />
  </label>
  <label>
  <input name="enddate" type="date" id="enddate" />
  </label>
  <label>
  <input name="Submit2" type="submit" onclick="MM_goToURL('parent','PAG_PUD_ROUTES_XLS.asp?<%= Server.HTMLEncode(MM_keepForm) %>');return document.MM_returnValue" value="Submit" />
  </label>
</form>


Can I do this at the same time?