function Show(e) {
    var t = e.offsetTop;
    var l = e.offsetLeft;
    var height = e.offsetHeight;
    while (e = e.offsetParent) {
        t += e.offsetTop;
        l += e.offsetLeft;
    }

    var mydiv = document.getElementById('J_div').style;
    mydiv.top = t;
    mydiv.left = l;
    mydiv.display = 'block';
    document.getElementById('ctl00_Bottom2UserControl1_txtAdmin').focus();
}

function Hide() {
    document.getElementById('J_div').style.display = "none";
}
function check() {
    var obj1 = document.getElementById('ctl00_Bottom2UserControl1_txtAdmin');
    var obj2 = document.getElementById('ctl00_Bottom2UserControl1_txtPsd');
    if (obj1.value == "") {
        alert("请输入用户名！");
        return false;
    }
    if (obj2.value == "") {
        alert("请输入密码！");
        return false;
    }
    return true;
}