请教个问题,某个页面在一定时间不操作,或者没有移动鼠标就自动跳转到另一个页面怎么实现?

<script>

timefly = 60000; //超时时间

activeDt = new Date();//得到当前时间放入变量作为初始时间

gotourl = "http://www.csdn.net"//需要跳转的地址

setInterval("checkTime()",1000);//每间隔1000毫秒执行checkTime函数检查是否超时

document.onmousemove = retime;//当鼠标移动

document.onkeypress = retime;//当鼠标点击重新获取当前时间放入变量作为初始时间

function retime(){

   activeDt = new Date();

}

function checkTime(){

dt = new Date();//得到当前时间放入变量

if((dt-activeDt)>timefly)location.href=gotourl;//如果当前时间减去初始时间大于超时时间，就执行自动跳转

}

</script>

<div id=mytest>1</div>

<script>

timefly = 60000 //ms

activeDt = new Date();

gotourl = "http://www.csdn.net"

setInterval("checkTime()",1000);

document.onmousemove = retime

document.onkeypress = retime

function retime(){

   activeDt = new Date()

   document.getElementById("mytest").innerHTML += (activeDt)+"<br>"//测试语句可删除

}

function checkTime(){

dt = new Date()

if((dt-activeDt)>timefly)location.href=gotourl

document.getElementById("mytest").innerHTML += (dt - activeDt)+"<br>"

//测试语句可删除

}

</script>

<div id=mytest>1</div>

<script>

timefly = 60000 //ms

activeDt = new Date();

gotourl = "http://www.csdn.net"

setInterval("checkTime()",1000);

document.onmousemove = retime

document.onkeypress = retime

function retime(){

   activeDt = new Date()

   document.getElementById("mytest").innerHTML += (activeDt)+"<br>"//测试语句可删除

}

function checkTime(){

dt = new Date()

if(dt-activeDt)location.href=gotourl

document.getElementById("mytest").innerHTML += (dt - activeDt)+"<br>"

//测试语句可删除

}

</script>