var duration=60000;
var endTime=new Date().getTime() + duration + 100;
function interval()
{
    var n=(endTime - new Date().getTime()) / 1000;
    if (n < 0) return;
    document.getElementById("timeout").innerHTML = n.toFixed(0);
    setTimeout(interval,100);
}
window.onload=function()
{
    setTimeout("window.location.href='http://www.jimei.com.cn'", duration);
    interval(); 
}