(function($) {
    var CB = function(e) { if (!e) var e = window.event; e.cancelBubble = true; if (e.stopPropagation) e.stopPropagation(); }; $.fn.checkbox = function(options) {
        try { document.execCommand('BackgroundImageCache', false, true); } catch (e) { }
        var settings = { cls: 'jquery-checkbox', empty: '/resources/images/ui/empty.png' }; settings = $.extend(settings, options || {}); var addEvents = function(object) {
            var checked = object.checked; var disabled = object.disabled; var $object = $(object); if (object.stateInterval)
                clearInterval(object.stateInterval); object.stateInterval = setInterval(function() {
                    if (object.disabled != disabled)
                        $object.trigger((disabled = !!object.disabled) ? 'disable' : 'enable'); if (object.checked != checked)
                        $object.trigger((checked = !!object.checked) ? 'check' : 'uncheck');
                }, 10); return $object;
        }; return this.each(function() {
            var ch = this; var $ch = addEvents(ch); if (ch.wrapper) ch.wrapper.remove(); ch.wrapper = $('<span class="' + settings.cls + '"><span class="mark"><img src="' + settings.empty + '" /></span></span>'); ch.wrapperInner = ch.wrapper.children('span:eq(0)'); ch.wrapper.hover(function(e) { ch.wrapperInner.addClass(settings.cls + '-hover'); CB(e); }, function(e) { ch.wrapperInner.removeClass(settings.cls + '-hover'); CB(e); }); $ch.css({ position: 'absolute', zIndex: -1, visibility: 'hidden' }).after(ch.wrapper); var label = false; if ($ch.attr('id')) { label = $('label[for=' + $ch.attr('id') + ']'); if (!label.length) label = false; }
            if (!label) { label = $ch.closest ? $ch.closest('label') : $ch.parents('label:eq(0)'); if (!label.length) label = false; }
            if (label) { label.hover(function(e) { ch.wrapper.trigger('mouseover', [e]); }, function(e) { ch.wrapper.trigger('mouseout', [e]); }); label.click(function(e) { $ch.trigger('click', [e]); CB(e); return false; }); }
            ch.wrapper.click(function(e) { $ch.trigger('click', [e]); CB(e); return false; }); $ch.click(function(e) { CB(e); }); $ch.bind('disable', function() { ch.wrapperInner.addClass(settings.cls + '-disabled'); }).bind('enable', function() { ch.wrapperInner.removeClass(settings.cls + '-disabled'); }); $ch.bind('check', function() {
                if (ch.wrapper.children(":first").hasClass(settings.cls + "-hover"))
                    ch.wrapper.children(":first").removeClass(settings.cls + "-hover")
                ch.wrapper.addClass(settings.cls + '-checked');
            }).bind('uncheck', function() { ch.wrapper.removeClass(settings.cls + '-checked'); }); $('img', ch.wrapper).bind('dragstart', function() { return false; }).bind('mousedown', function() { return false; }); if (window.getSelection)
                ch.wrapper.css('MozUserSelect', 'none'); if (ch.checked) { ch.wrapper.addClass(settings.cls + '-checked'); }
            if (ch.disabled)
                ch.wrapperInner.addClass(settings.cls + '-disabled');
        });
    } 
})(jQuery);