弹出框页面跳转或者关闭效果

感谢群里的KB同学，好基友一辈子

window.onbeforeunload = function(){
    var b;
    if(!b){
        t = setTimeout("jump()",150);
    }
    return "确定要离开这鸟页面？";
};

function jump(){
    window.onbeforeunload = null;
    location.href = "http://www.baidu.com/";
    b = true;//解决IE下的BUG
}