function checkform()
{
    var errormsg;
    errormsg = true;
    if (document.getElementById("username").value == null || document.getElementById("username").value == "")
    {
        document.getElementById("username_d").innerHTML = "<font color=red>用户名不能为空</font>";
        document.getElementById("username").focus();
        errormsg = false;
    }
    else
    {
        document.getElementById("username_d").innerHTML = "帐户名";
    }

    if (document.getElementById("password").value == null || document.getElementById("password").value == "")
    {
        document.getElementById("password_d").innerHTML = "<font color=red>密码不能为空</font>";
        document.getElementById("password").focus();
        errormsg = false;
    }
    else
    {
        document.getElementById("password_d").innerHTML = "登录密码";
    }

    if (document.getElementById("verify").value == null || document.getElementById("verify").value == "")
    {
        document.getElementById("verify_d").innerHTML = "<font color=red>验证码不能为空</font>";
        document.getElementById("verify").focus();
        errormsg = false;
    }
    else
    {
        document.getElementById("verify_d").innerHTML = "请将下面的文字输入框中";
    }
    if (errormsg)
    {
        CheckLogin();
    }
}

function tabit(id, cid)
{
    tabagent.className = "taboff"; tabprice.className = "taboff"; tabkehu.className = "taboff"; id.className = "tabon";
    cagent.style.display = "none"; cprice.style.display = "none"; ckehu.style.display = "none"; cid.style.display = "block";
    //winname=cid;
}
function showall()
{
    tabagent.className = "tabon"; tabprice.className = "tabon"; tabkehu.className = "tabon";
    cagent.style.display = "block"; cprice.style.display = "block"; ckehu.style.display = "block";
}

function testid()
{
    document.login.username.value = 'test';
    document.login.password.value = 'test';
    document.login.verify.focus();
    alert("欢迎光临，现在您只须输入验证码即可登录体验！");
}

function killErrors()
{
    return true;
}

if (top.location != location)
    top.location.href = location.href;

window.onerror = killErrors;