jsp and java script

jsp and java script

<%@taglib prefix="logic" uri="http://struts.apache.org/tags-logic"%>
<%@taglib prefix="bean" uri="http://struts.apache.org/tags-bean"%>
<html>
<head>


 </head>

 <body onload="check()">
<bean:define id="itemName" scope="request">
                <bean:write name="qty" property="accountName" />
            </bean:define>
            <%
                String s1 = itemName;
                int a = Integer.parseInt(s1);
                System.out.println("Items Avaliable are" + a);
            %>
            <script>
function check() {
<%System.out.println("tetsing");%>
        window.al("<h1>Only <%=a%> item Avaliable Please Order This Product as soon as possible</h1>");
}
</script>
 </body>
</html>

this is my jsp code am retriveing a value from action class and assigning it to a javascript variable if the value is less than 3 i want to display a alert box am getting value into javascript but alert box is not displaying what could be the problem its a little urgent please reply me as soon as possible

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