Coldfusion会话超时1小时警告

Question

我有一个application.cfc，我告诉程序我希望会话超时像这样一小时：

<cfset this.sessionTimeout = "#createTimeSpan(0,1,0,0)#">

然后在其他页面上，我尝试在超时结束时设置警告

<!---Session Timeout Warning Pop up set to 1 hour--->
        <cfset sessionTimeout = 60>

<!---Warning 1 minute before Session will timeout--->

    <script>
        <cfoutput>
            var #toScript((sessionTimeout-1)*60*1000,"sTimeout")#
        </cfoutput>
        setTimeout('sessionWarning()', sTimeout);

        function sessionWarning() {
            alert('ATTENTION: Your session will time out shortly do to inactivity.');    
        }
    </script>

<!---End of Warning--->

出于某种原因，超时时间不会超过59分钟。我错过了什么吗？