var user = $('.username').value();
var pass = $('.password').value();
$.ajax({
type : 'POST',
url  : 'login_check.php',
data : {
            'username':user,
            'password':pass,
            },
beforeSend: function()
{
 $("#Loading").show();
},
success :  function(response)
   {
  if(response=="success" && response!=="fail"){
   $('.status').html("Success! Now logging in ......");
   setTimeout(' window.location.href = "index.php"; ',4000);
  }
  else{
   $('#Loading i').hide();
   $('.status').html("Login fail! Please use correct credentials....");
   setTimeout(' window.location.href = "login.php"; ',4000);
  }
  }
});
}
})