odd js undefined error

Hi,

I have a page that a user enters an address into and it goes and finds the lat and long for that address. The code for this section is reused around the site (unfortunately its an intranet so I have just taken the html for you to see the code.).  When they click the validate button, it pops up a window, and if a result is found enters the values in the parent and closes the window. Works fine on one, but not on the other why?

The code for the address part of the user form is identical as it uses a php include.

The js we focus on here is in the popup, should push the lat and long into the appropriate place on the parent form, and close the window.

<script>
      function updateLatLong(longitude,latitude){
            window.opener.surveyInput.sit_longitude.value = longitude;
            window.opener.surveyInput.sit_latitude.value = latitude;
            window.opener.surveyInput.addressValidated.value = 1;
            window.opener.surveyInput.validateAddress.disabled = 1;
            window.opener.surveyInput.validateAddress.value = 'Validated!';
            window.close();
      }
      //alert(window.opener.surveyInput);
      updateLatLong(151.27885045,-33.79528801);
</script>

Note the pages wont render right as I havent included images and other js.

scenario 1: included in another form: http://www.sixfive.co.uk/wizz/wizzjsproblem/index.html this calls http://www.sixfive.co.uk/wizz/wizzjsproblem/found.html on click of validate.

Gets js error: Error: window.opener.newSiteSurvey has no properties
Source file: http://local.wizz.com.au/crm/index.php?fuseaction=shared.getCoords&address1=1+parkview+road&address2=&suburb=fairlight&postcode=2094&state=NSW&formName=newSiteSurvey
Line: 53

scenario2: only the include as a form, http://www.sixfive.co.uk/wizz/wizzjsproblem/index2.html this calls http://www.sixfive.co.uk/wizz/wizzjsproblem/found2.html on click of validate. This js on found2.html works fine and closes the window whilst entering the lat and long into the form on the parent.