firefox下如何判断页面是刷新的还是关闭的？

用onbeforeunload？具体代码谁有啊？刚才试了几个都不行！：             if (evt.clientX>document.body.clientWidth && evt.clientY<0 ||evt.altKey) 
                        { 
                        alert   ( "关闭 "); 
                        } 
                        else 
                        { 
                         alert( "刷新 "); 
                        }
                        或是：        if(document.documentElement.scrollWidth!=0)
            alert("是刷新");
        else
            alert("是关闭");
          
        都不行

解决方案 »

  1.   

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title></title>
        <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    </head>
    <script>
        function CloseOpen(evt) {
            if (evt.clientX <= 0 && evt.clientY < 0) {
                alert("关闭");
            }
            else {
                alert("刷新或离开");
            }
        }
    </script>
    <body onunload="CloseOpen(event)">
    </body>
    </html>