jQuery.cookie = function(name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        // CAUTION: Needed to parenthesize options.path and options.domain
        // in the following expressions, otherwise they evaluate to undefined
        // in the packed version for some reason...
        var path = options.path ? '; path=' + (options.path) : '';
        var domain = options.domain ? '; domain=' + (options.domain) : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};
var maggiAlert = {
	center: function (e) {
		var popin = jQuery("#layer-alert"), jWindow = jQuery(window), top;
		
		if(jQuery.browser.msie && jQuery.browser.version <= 6) {
			bg.css({"position": "absolute"});
			bg = jQuery("#bg-layer-alert").height(jWindow .height()+jWindow .scrollTop());
		}
		
		popin.css('left', jWindow.width() / 2 - popin.width() / 2 + jWindow.scrollLeft());
		top = jWindow.height() / 2 - popin.height() / 2 + jWindow.scrollTop();
		top = (top > 0 ? top : 0);
		popin.css('top', top);
	},
	close: function (e) {
		e.preventDefault();
		jQuery("#layer-alert, #bg-layer-alert").hide();

	},
	init: function () {
		if (jQuery("#bg-layer-alert").length > 0 && jQuery("#layer-alert").length > 0) {
			jQuery("body").append(jQuery("#bg-layer-alert"));
			jQuery("body").append(jQuery("#layer-alert"));
			// && jQuery.cookie("alertRead") == null
			jQuery.cookie("alertRead", "true");

			jQuery("#bg-layer-alert, #layer-alert").show();
			
			jQuery("#bg-layer-alert, #layer-alert .bt-close").bind("click", maggiAlert.close);
			
			maggiAlert.center();
			
			jQuery(window).bind("resize", maggiAlert.center);
			jQuery(window).bind("scroll", maggiAlert.center);
		}
	}
};

jQuery(document).ready(function(){
	maggiAlert.init();
});