兼容火狐几秒后跳转页面

<script>
    var t = 3;
    setInterval("testTime()", 1000); //启动1秒定时   
    function testTime() {
        if (t == 0) {
            window.location= http://www.qq.com;
            Window.clearInterval();
        } else {
            if(navigator.appName.indexOf("Explorer") > -1){    
                    document.getElementById('view').innerHTML=t;
               } else{    
                    document.getElementById('view').textContent = t;    
              }  
            t--; //   计数器递减
        }
    }
</script>