if (typeof www_istat_it == "undefined")
    var www_istat_it = new Object();

// Better than linking the plugin https://github.com/carhartl/jquery-cookie
// https://github.com/carhartl/jquery-cookie/blob/master/jquery.cookie.js
www_istat_it.cookie = function (key, value, options)
{
    // key and at least value given, set cookie...
    if (arguments.length > 1 && String(value) !== "[object Object]") {
        options = jQuery.extend({}, options);

        if (value === null || value === undefined) {
            options.expires = -1;
        }

        if (typeof options.expires === 'number') {
            var days = options.expires, t = options.expires = new Date();
            t.setDate(t.getDate() + days);
        }

        value = String(value);

        return (document.cookie = [
            encodeURIComponent(key), '=',
            options.raw ? value : encodeURIComponent(value),
            options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
            options.path ? '; path=' + options.path : '',
            options.domain ? '; domain=' + options.domain : '',
            options.secure ? '; secure' : ''
        ].join(''));
    }

    // key and possibly options given, get cookie...
    options = value || {};
    var result, decode = options.raw ? function (s) { return s; } : decodeURIComponent;
    return (result = new RegExp('(?:^|; )' + encodeURIComponent(key) + '=([^;]*)').exec(document.cookie)) ? decode(result[1]) : null;
}

// Global font-size management
www_istat_it.fontSize =
{
    // Provide some default
    startSize:"12px",
    actualSize:"12px",
    scale:1.1, // Factor
    size:function(size)
    {
        if (size!="" && size!=null)
        {
            this.actualSize = size;
            $("body").css('font-size', size);
        }
        return this.actualSize;
    },
    init:function()
    {
        this.startSize = $("body").css('font-size');
        this.size(this.startSize);
    },
    smaller:function()
    {
        return (this.size(this.actualSize.substr(0, this.actualSize.length - 2) / this.scale + 'px'));
    },
    larger:function()
    {
        return (this.size(this.actualSize.substr(0, this.actualSize.length - 2) * this.scale + 'px'));
    },
    reset:function()
    {
        return this.size(this.startSize);
    }
}