(function($) {

    $.alerts = {

        // These properties can be read/written by accessing $.alerts.propertyName from your scripts at any time

        verticalOffset: -75,                // vertical offset of the dialog from center screen, in pixels
        horizontalOffset: 0,                // horizontal offset of the dialog from center screen, in pixels/
        repositionOnResize: true,           // re-centers the dialog on window resize
        overlayOpacity: .01,                // transparency level of overlay
        overlayColor: '#FFF',               // base color of overlay
        draggable: true,                    // make the dialogs draggable (requires UI Draggables plugin)
        okButton: ' OK ',         // text for the OK button
        cancelButton: ' Cancel ', // text for the Cancel button
        dialogClass: null,                  // if specified, this class will be applied to all dialogs

        // Public methods

        alert: function(message, title, callback) {
            if (title == null) title = '';
            $.alerts._show(title, message, null, 'alert', function(result) {
                if (callback) callback(result);
            });
        },
        notify: function(message, title, callback) {
            if (title == null) title = '';
            $.alerts._show(title, message, null, 'notify', function(result) {
                if (callback) callback(result);
            });
        },
        confirm: function(message, title, callback) {
            if (title == null) title = 'Confirm';
            $.alerts._show(title, message, null, 'confirm', function(result) {
                if (callback) callback(result);
            });
        },
        promptmultiline: function(message, value, title, callback, numbersonly) {
            if (title == null) title = 'Prompt';
            $.alerts._show(title, message, value, 'promptmultiline', function(result) {
                if (callback) callback(result);
            }, numbersonly);
        },
        prompt: function(message, value, title, callback, numbersonly) {
            if (title == null) title = 'Prompt';
            $.alerts._show(title, message, value, 'prompt', function(result) {
                if (callback) callback(result);
            }, numbersonly);
        },

        // Private methods

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

            $.alerts._hide();

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

            $("#popup_container").attr('type', type);
            if ($.alerts.dialogClass) $("#popup_container").addClass($.alerts.dialogClass);

            // IE6 Fix
            var pos = ($.browser.msie && parseInt($.browser.version) <= 6) ? 'fixed' : 'absolute';
            $("#popup_message").text(msg);
            $("#popup_message").html($("#popup_message").text().replace(/\n/g, '<br />'));
            if (type != 'notify') {
                $.alerts._overlay('show');
                $("#popup_container").css({
                    position: pos,
                    zIndex: 99999,
                    padding: 0,
                    margin: 0
                });
            } else {
                pos = 'absolute';
                $("#popup_container").css({
                    zIndex: 99999,
                    position: pos,
                    display: 'none',
                    width: '300px'
                });
                $("#popup_container").slideDown('', function() { $.alerts._reposition(); });
                setTimeout('$.alerts._slideUp()', 6000);
            }


            $("#popup_title").text(title);
            $("#popup_content").addClass(type);


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

            $.alerts._reposition();
            $.alerts._maintainPosition(true);
            $(window).scroll(function() {
                $.alerts._reposition();
            });

            switch (type) {
                case 'notify':
                case 'alert':
                    $("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /></div>');
                    if (type != 'notify') {
                        $("#popup_ok").click(function() {
                            $.alerts._hide();
                            callback(true);
                        });
                    }
                    else {
                        $("#popup_ok").click(function() {
                            $.alerts._slideUp();
                            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 'promptmultiline':
                case 'prompt':
                    if (type == '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>');
                    else
                        $("#popup_message").append('<br /><textarea 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>');

                    if (numbersonly)
                        $('#popup_prompt').keypress(function(e) { return NumbersOnly(e, ',.', this); });
                    $("#popup_prompt").width($("#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);
                    });
                    if (type == 'prompt')
                        $("#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);
                    $("#popup_prompt").focus().select();
                    break;
            }
            if ($("#popup_container").width() < 250) {
                $("#popup_container").width(250)
            }
            if (type != 'notify') {
                var docpos = $(document).width();
                $("#popup_container").css('left', (docpos - $("#popup_container").width()) / 2);
            }
            // Make draggable
            if ($.alerts.draggable) {
                try {
                    $("#popup_container").draggable({ handle: $("#popup_title") });
                    $("#popup_title").css({ cursor: 'move' });
                } catch (e) { /* requires jQuery UI draggables */ }
            }
        },

        _hide: function() {
            $("#popup_container").fadeOut('fast', function() {
                $("#popup_container").remove();
                $.alerts._overlay('hide');
                $.alerts._maintainPosition(false);
            });
        },
        _slideUp: function() {
            $("#popup_container").slideUp('', function() {
                $("#popup_container").remove();
                $.alerts._overlay('hide');
                $.alerts._maintainPosition(false);

            });
        },
        _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: $.alerts.overlayColor,
                        opacity: $.alerts.overlayOpacity
                    });
                    break;
                case 'hide':
                    $("#popup_overlay").remove();
                    break;
            }
        },

        _reposition: function() {
            if ($("#popup_container").attr('type') != 'notify') {
                var top = (($(window).height() / 2) - ($("#popup_container").outerHeight() / 2)) + $.alerts.verticalOffset + document.body.scrollTop;
                var left = (($(window).width() / 2) - ($("#popup_container").outerWidth() / 2)) + $.alerts.horizontalOffset + document.body.scrollLeft;
                if (top < 0) top = 0;
                if (left < 0) left = 0;

                // IE6 fix
                if ($.browser.msie && parseInt($.browser.version) <= 6) top = top + $(window).scrollTop();

                $("#popup_container").css({
                    top: top + 'px',
                    left: left + 'px'
                });
                $("#popup_overlay").height($(document).height());
            }
            else {
                var h = ($("#popup_container").outerHeight());
                if (h < 0) {
                    h = 90;
                }
                if ($.browser.msie)
                    h += 10;
                $("#popup_container").css({
                    top: $('body').innerHeight() - h + document.body.scrollTop - 20,
                    left: $('body').innerWidth() - $("#popup_container").outerWidth() - 20
                });
            }
        },

        _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);
    }

    jNotify = function(message, title, callback) {
        $.alerts.notify(message, title, callback);
    }

    jConfirm = function(message, title, callback) {
        $.alerts.confirm(message, title, callback);
    };

    jPrompt = function(message, value, title, callback, numbersonly) {
        $.alerts.prompt(message, value, title, callback, numbersonly);
    };

    jPromptMultiLine = function(message, value, title, callback, numbersonly) {
        $.alerts.promptmultiline(message, value, title, callback, numbersonly);
    };
})(jQuery);

$(document).ready(function() {
if ($('#promptCss').length == 0) {
        $('head').append($('<link rel="stylesheet" id="promptCss" type="text/css" media="all" href="/css/prompt.css" />'));
    }
});