function CheckLogin(userName, passWrod, Valitar) {
    
    userName = document.getElementById(userName).value;
    passWrod = document.getElementById(passWrod).value;
    Valitar = document.getElementById(Valitar).value;
    if (userName == "") {
	alert("登陆名不能为空!");
        return false;
    } 
	else {
	document.getElementById("spanName").innerHTML = "";

    }
    if (passWrod == "") {
	alert("密码不能为空!");
        return false;
    } else {
        document.getElementById("spanPass").innerHTML = "";
     
    }
	if (Valitar == "") {
	alert("验证码不能为空!");
        return false;
    } else {
        document.getElementById("spanPass").innerHTML = "";
      
    }
   
    
    SendAjax("ConMain", userName, passWrod, Valitar);
  
}

function SendAjax(op, Name, passWrod, Valitar) {
    var param = "Option=" + op + "&txtLoginName=" + Name + "&txtPassword=" + passWrod + "&txtCode=" + Valitar;
    var options = {
        method: 'post',
        parameters: param,
        onComplete:
        function(transport) {
            var retv = transport.responseText;
            if (retv == "true") {
                
                var url= "/member_index.aspx";
                window.location.href = url;
            }
            else if(retv.indexOf("http")>=0)
            { 
             window.location.href = retv;
            }
            else {
                alert(retv);
            }
        }

    }
    new Ajax.Request('../filehandle/loginform.ashx', options);
}