I don't understand why this code doesn't work in netscape.
I have a link that I want to submit a form

My form code looks like this:
<form id="purchaseorder" name="purchaseorder" method="post" action="processorder.php?Product_ID=KJB001">


My submit link looks like this:
<a href = "javascript: purchaseorder.submit();"> <img src="pictures/ADDTOCART.jpg" width="128" height="18" border="0"></a>

It works in ie, but not in netscape. Any ideas why?