if($.trim(email).length>0 && $.trim(password).length>0) {



                $.ajax({
                        type: "POST",
                        url: "http://www.example.com/app/login.php",
                        crossDomain: true,
                        dataType: 'json',
                        data: $.trim(frm.serialize()),
                        beforeSend: function(){
                            $('#loader').css({ display: "block" });
                        },
                        success: function(data,status,XHR) {
                            handleData(data);//handle the servers respond
                        },
                        error: function(httpReq,status,exception){
                            alert("Network error: "+status+" "+exception);
                            $('#loader').css({ display: "none" });
                        }

                    });
        }

function handleData( responseData ) {
            var access = responseData;

            if(access == "good"){//server respond good username/pass
                alert("Welcome");
                $('#loader').css({ display: "none" });
            }
            }
            else{
                alert("Your username and password didn't match.");

                $('#input_password').val('');
                $('#loader').css({ display: "none" });

            }
            console.log(responseData);
        }