Hi Heather,
Depends on what you mean by form re-post. In some situations, you need to submit (using a POST request) to your web site backend (for example, we are a software company and need to post to our licensing server first before posting to marketing automation). In this instance, you would need your developers to do the processing because this would be a server-side request (as opposed to a client-side request which could be handled in javascript).
If your form is hosted on your web site, but just needs to submit to Eloqua, you don't even need javascript to accomplish this
in your form tag, just specify that the action=http://s33.t.eloqua.com/e/f2.aspx
You'll also need to add these hidden fields - first one will tell Eloqua what form this is, second tells them what company you are
<input type="hidden" name="elqFormName" value="ENTER ELOQUA HTML FORM NAME" />
<input type="hidden" name="elqSiteId" value="ENTER SITE ID" />
make sure all your form field names match the Eloqua names, and you'll be good to go.