Displaying a servlet string in a confirm pop-up

Hello,
Can someone please let me know if and how I can take a servlet string variable and place it into a confirm pop-up window?
Thanks,
- Grant

<%
    String str = (String)request.getAttribute("string.to.display");
%><html>
<head>
function doConfirm() {
confirm("<%=str%>");
</head>
<body onLoad="doConfirm()">
This was a test. This was only a test.
</body>
</html>
I hope that helps!

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