I'm developing a website. But it caches user name and password in cache block which can be accessed using hacking software like winhex. I want to clear cache

$(.object-position).livequery(change, function() {

    $(#objects-list input).attr('disabled', true);

    var action = $(this).attr('name');

    var position = $(this).attr('value');

    var id = $(this).attr(id);

    var model = id.split(-)[0];

    var object_id = id.split(-)[1];



    $(#loader).show();

    $(#loader).fadeIn(200);



    $.ajax({

        type: POST,

        async: true,

        url: /manage/update_position/,

        data: action= + action + &model= + model + &object_id= + object_id + &position= + position,

        dataType: json,

        success: function(data){

            $(#loader).fadeOut(fast, function () {

                $(#loader).hide();

            });

            $(objects-list).html(data[html]);

            $(#message).show();

            $(#message).fadeIn(400).html('<span>'+data[message]+'</span>');

            setTimeout(function(){

                $(#message).fadeOut(slow, function () {

                    $(#message).hide();

                });

            }, 1500); 

        }

    });

    $(#objects-list input).attr(disabled, false);

    return false;

});