Oscommerce Template PHP code issue in IE9 possible product_info.php error

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Project Budget (USD)
$30 - $250

Project Description:
I have a problem with this page using IE9 http://smbfinance.com.au/catalog/product_info.php?products_id=29

The postage calculator code does not work. To test, you can type MELBOURNE into the calculator where it says place, it should process a background script and display a freight amount. Try it with Firefox and it works, IE10 works, IE9 does not work.

I have attached the actual script, and also the HTML code on that page

I am not sure what the problem is here, must be simple but it beats me.

This problem only occurs when used under the oscommerce site. If you open the HTML page on its own then the script works in IE9. I guess this means the error is not just IE9, but it also has something to do with the oscommerce site design. Maybe a problem with product_info.php

Skills required:
Additional Files: TEST.html blue.php product_info.php
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