JavaScript pop up close on submit

[Billy Purdy]

We had a developed add a pop up on our site, and I am trying to get it to close once submit is pressed... I have searched around and tried many things but nothing seems to work. I am not too familiar with JavaScript was wondering if anyone has any suggestions...

below is the main part of the code.

Much appreciated!

    <form action="/inc/usda-hardiness-zones.htm" method="post">
      <input name="hitit" type="hidden" value="1" />
      <tr>
        <td colspan="4" align="right"><a href="javascript:MM_showHideLayers('usdazone','','hide');" onclick="document.getElementById('usdazone').style.zIndex = '-1';" class="clickclose">Click Here to Close</a><br /><br /></td>
 
... blah blah blah ...
 
<input name="zipcode" type="text" value="<? if( isset( $zip ) ) { echo $zip; } ?>" size="5" maxlength="5" class="usdainput" />
          &nbsp;&nbsp;
          <input type="submit" value=" Get My USDA Zone! " onclick="javascript:submitForm(); javascript:self.close(); return false;" class="clickclose" />

[acoder]

Once the form is submitted, the next statement won't run. What you'll have to do is close it once the new page has loaded - use the onload event.