accessing information inside a jsp:include from the parent jsp

Question

I'm trying to access form data that is filled out inside a jsp:included page from outside the page. I am using jquery and am open to using ajax. My code looks a little like this:

<form name=form1>
<jsp:include page="someFormData.jsp" />
//Other inputs out here in <% include %> files
<input type=button value=Submit onClick="return commonSubmit()"
</form>

I need to use the jsp:include style include because having everything on one page using <%include...%> was causing an exception due to my jsp being too large. Alls I need to do is be able to submit the form and include the data inside "someFormData.jsp"