function CheckEmail()     {       var e = document.getElementById("textfield3").value;        if(e != "") {            if(!/(\S)+[@]{1}(\S)+[.]{1}(\w)+/.test(e))             {                alert("请输入格式正确的 e-mail 地址！");            }             else             {                window.open("http://www.faxems.com/lenovo/Testfree.aspx?email="+e);            }        }        else        {         alert("请输入e-mail 地址！");        }    } </script>

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