<html>
<head>
<script type="text/javascript">
function submitForm()
{
var x=document.getElementById("myForm");
x.target="_blank";
x.submit();
}
</script>
</head>
<body>
<form id="myForm" action="/example/html/form_action.aspx">
Name: <input type="text" value="Mickey Mouse" />
<input type="button" onclick="submitForm()"
value="Submit" />
</form>
</body>
</html>