; (function ($) {
    $.fn.textLimiter = function (options) {
        return this.each(function () {
            var $this = $(this);
            options = $.extend({
                'maxLength': 100,
                'align': 'right',
                'valign': 'bottom',
                'show': 'auto',
                'elCount': 'auto'
            }, options);

            $this.attr('maxLength', options['maxLength']);

            $this.keyup(function () {
                processTextAreaText($this);
            });
            $this.keydown(function () {
                processTextAreaText($this);
            });
            $this.change(function () {
                processTextAreaText($this);
            });

            if (options['elCount'] == 'auto') {
                if (options['show'] == 'always') {
                    showCount($this, options['align'], options['valign'], options['show']);
                } else if (options['show'] == 'auto') {
                    $this.focusin(function () {
                        showCount($this, options['align'], options['valign'], options['show']);
                    });
                }
            } else {
                $this.attr('divName', options['elCount']);
                $('#' + $this.attr('divName')).html($this.attr('maxLength') - $this.text().length);
            }

            $this.focusout(function () {
                if (options['elCount'] == 'auto' && options['show'] != 'always') {
                    $('#' + $this.attr('divName')).hide();
                }
            });
        });
    };

    function processTextAreaText($obj) {
        var maxLength = $obj.attr('maxLength');
        var text = $obj.text();
        var $cc = $('#' + $obj.attr('divName'))

        $cc.html(maxLength - text.length);

        if (parseInt($cc.html()) < 0)
            $cc.html('0');

        if (maxLength != 0 && text.length > maxLength)
            $obj.text(text.substr(0, maxLength));
    };

    function showCount($obj, align, valign, show) {
        if (show == 'always') {
            var divName = 'textAreaMaxLengthPlugin_divCharCount_' + $obj.attr('id');
        } else {
            var divName = 'textAreaMaxLengthPlugin_divCharCount';
        }

        if (!$('#' + divName).length) {
            $('body').append('<div id="' + divName + '"></div>');
        }

        $obj.attr('divName', divName);

        var $cc = $('#' + divName);

        $cc.html($obj.attr('maxLength') - $obj.text().length);

        var x = $obj.position().left;

        if (valign == 'bottom') {
            var y = $obj.position().top + $obj.height() - $cc.height();
        } else if (valign == 'top') {
            var y = $obj.position().top + 2;
        }

        $cc.css('position', 'absolute');
        $cc.css('text-align', align);
        $cc.css('padding', '0px 15px 0px 5px');
        $cc.css('width', $obj.width());
        $cc.css('opacity', 0.5);
        $cc.css('left', x);
        $cc.css('top', y);

        if (show != 'never') {
            $cc.fadeTo(200, .5);
        }
    }

})(jQuery);