(function ($) {
    $.alerts = {
        // These properties can be read/written by accessing $.alerts.propertyName from your scripts at any time
        verticalOffset: -50,
        horizontalOffset: 0,
        repositionOnResize: true,
        overlayOpacity: .50,
        overlayColor: '#000',
        draggable: true,
        okButton: ' Aceptar ',
        cancelButton: ' Cancelar ',
        dialogClass: null,
        msgBoxTitle: ' Atención ',
        // Public methods
        alert: function (message, title, callback) {
            $.alerts._show(title, message, null, 'alert', function (result) {
                if (callback) callback(result);
            });
        },
        confirm: function (message, title, callback) {
            $.alerts._show(title, message, null, 'confirm', function (result) {
                if (typeof (callback) == 'function') {
                    callback(result);
                }
                else if (result && typeof (callback) == 'object') {
                    if (callback.tagName == 'INPUT') {
                        __doPostBack(callback.name, '');
                    }
                    else if (callback.tagName == 'A') {
                        document.location = callback;
                    }
                }
            });
        },
        prompt: function (message, value, title, callback) {
            $.alerts._show(title, message, value, 'prompt', function (result) {
                if (callback) callback(result);
            });
        },

        // Private methods

        _show: function (title, msg, value, type, callback) {

            $.alerts._hide();
            $.alerts._overlay('show');
            $("#popup_container").remove();
            $("BODY").append(
            '<div id="popup_container">' +
                '<div class="lb40 fix-png">' +
                '<h1>' + $.alerts.msgBoxTitle + '</h1>' +
                '<div class="lb1" id="popup_content" style="background:none;">' +
                    '<span class="lb1_bigtext">' +
                        '<div id="popup_message"></div>' +
                    '</span>' +
                '</div></div>' +
            '</div>');

            /*
            $("BODY").append(
            '<div id="popup_container">' +
            '<h1 id="popup_title"></h1>' +
            '<div id="popup_content">' +
            '<div id="popup_message"></div>' +
            '</div>' +
            '</div>');
            */

            if ($.alerts.dialogClass) $("#popup_container").addClass($.alerts.dialogClass);

            var ie6 = $.browser.msie && parseInt($.browser.version) <= 6;
            var pos = (ie6) ? 'absolute' : 'fixed';
            if (ie6) $("BODY").addClass('noCombos');

            $("#popup_container").css({
                position: pos,
                zIndex: 999999,
                padding: 0,
                margin: 0
            });

            if (title)
                $("#popup_title").text(title);
            else
                $("#popup_title").hide();
            $("#popup_content").addClass(type);
            $("#popup_message").text(msg);
            $("#popup_message").html($("#popup_message").text().replace(/\n/g, '<br />'));

            $("#popup_container").css({
                minWidth: $("#popup_container").outerWidth(),
                maxWidth: $("#popup_container").outerWidth()
            });

            $.alerts._reposition();
            $.alerts._maintainPosition(true);

            switch (type) {
                case 'alert':
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /></div>');
                    $("#popup_ok").click(function () {
                        $.alerts._hide();
                        callback(true);
                    });
                    $("#popup_ok").focus().keypress(function (e) {
                        if (e.keyCode == 13 || e.keyCode == 27) $("#popup_ok").trigger('click');
                    });
                    break;
                case 'confirm':
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" /></div>');
                    $("#popup_ok").click(function () {
                        $.alerts._hide();
                        if (callback) callback(true);
                    });
                    $("#popup_cancel").click(function () {
                        $.alerts._hide();
                        if (callback) callback(false);
                    });
                    $("#popup_ok").focus();
                    $("#popup_ok, #popup_cancel").keypress(function (e) {
                        if (e.keyCode == 13) $("#popup_ok").trigger('click');
                        if (e.keyCode == 27) $("#popup_cancel").trigger('click');
                    });
                    break;
                case 'prompt':
                    $("#popup_message").append('<br /><input type="text" size="30" id="popup_prompt" />').after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" /></div>');
                    $("#popup_prompt").width($("#popup_message").width());
                    $("#popup_ok").click(function () {
                        var val = $("#popup_prompt").val();
                        $.alerts._hide();
                        if (callback) callback(val);
                    });
                    $("#popup_cancel").click(function () {
                        $.alerts._hide();
                        if (callback) callback(null);
                    });
                    $("#popup_prompt, #popup_ok, #popup_cancel").keypress(function (e) {
                        if (e.keyCode == 13) $("#popup_ok").trigger('click');
                        if (e.keyCode == 27) $("#popup_cancel").trigger('click');
                    });
                    if (value) $("#popup_prompt").val(value);
                    $("#popup_prompt").focus().select();
                    break;
            }

            // Make draggable
            if ($.alerts.draggable) {
                try {
                    $("#popup_container").draggable({ handle: $("#popup_title") });
                    $("#popup_title").css({ cursor: 'move' });
                } catch (e) { /* requires jQuery UI draggables */ }
            }

            setTimeout(function () { $.alerts._reposition(); }, 1000);
        },

        _hide: function () {
            //$("#popup_container").remove();
            $("#popup_container").css('display','none');
            $.alerts._overlay('hide');
            $.alerts._maintainPosition(false);
            var ie6 = $.browser.msie && parseInt($.browser.version) <= 6;
            if (ie6) $("BODY").removeClass('noCombos');            
        },

        _overlay: function (status) {
            switch (status) {
                case 'show':
                    $.alerts._overlay('hide');
                    $("BODY").append('<div id="popup_overlay"></div>');
                    $("#popup_overlay").css({
                        position: 'absolute',
                        zIndex: 99998,
                        top: '0px',
                        left: '0px',
                        width: '100%',
                        height: $(document).height(),
                        background: 'url(../images/fondo-top.gif) #f0f5fc repeat-x',
                        opacity: $.alerts.overlayOpacity
                    });
                    break;
                case 'hide':
                    $("#popup_overlay").remove();
                    break;
            }
        },

        _reposition: function () {
            var top = (($(window).height() / 2) - ($("#popup_container").outerHeight() / 2)) + $.alerts.verticalOffset;
            var left = (($(window).width() / 2) - ($("#popup_container").outerWidth() / 2)) + $.alerts.horizontalOffset;
            if (top < 0) top = 0;
            if (left < 0) left = 0;

            var ie6 = $.browser.msie && parseInt($.browser.version) <= 6;
            if (ie6) top = top + $(window).scrollTop();

            $("#popup_container").css({
                top: top + 'px',
                left: left + 'px'
            });
            $("#popup_overlay").height($(document).height());
        },

        _maintainPosition: function (status) {
            if ($.alerts.repositionOnResize) {
                switch (status) {
                    case true:
                        $(window).bind('resize', $.alerts._reposition);
                        break;
                    case false:
                        $(window).unbind('resize', $.alerts._reposition);
                        break;
                }
            }
        }
    }

    // Shortuct functions
    jAlert = function (message, title, callback) { $.alerts.alert(message, title, callback); }
    jConfirm = function (message, title, callback) { $.alerts.confirm(message, title, callback); return false; };
    jPrompt = function (message, value, title, callback) { $.alerts.prompt(message, value, title, callback); };

})(jQuery);