/** 
 * Cookie plugin 
 * 
 * Copyright (c) 2006 Klaus Hartl (stilbuero.de) 
 * Dual licensed under the MIT and GPL licenses: 
 * http://www.opensource.org/licenses/mit-license.php 
 * http://www.gnu.org/licenses/gpl.html 
 * 
 */ 
 
/** 
 * Create a cookie with the given name and value and other optional parameters. 
 * 
 * @example $.cookie('the_cookie', 'the_value'); 
 * @desc Set the value of a cookie. 
 * @example $.cookie('the_cookie', 'the_value', {expires: 7, path: '/', domain: 'jquery.com', secure: true}); 
 * @desc Create a cookie with all available options. 
 * @example $.cookie('the_cookie', 'the_value'); 
 * @desc Create a session cookie. 
 * @example $.cookie('the_cookie', null); 
 * @desc Delete a cookie by passing null as value. 
 * 
 * @param String name The name of the cookie. 
 * @param String value The value of the cookie. 
 * @param Object options An object literal containing key/value pairs to provide optional cookie attributes. 
 * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object. 
 *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted. 
 *                             If set to null or omitted, the cookie will be a session cookie and will not be retained 
 *                             when the the browser exits. 
 * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie). 
 * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie). 
 * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will 
 *                        require a secure protocol (like HTTPS). 
 * @type undefined 
 * 
 * @name $.cookie 
 * @cat Plugins/Cookie 
 * @author Klaus Hartl/klaus.hartl@stilbuero.de 
 */ 
 
/** 
 * Get the value of a cookie with the given name. 
 * 
 * @example $.cookie('the_cookie'); 
 * @desc Get the value of a cookie. 
 * 
 * @param String name The name of the cookie. 
 * @return The value of the cookie. 
 * @type String 
 * 
 * @name $.cookie 
 * @cat Plugins/Cookie 
 * @author Klaus Hartl/klaus.hartl@stilbuero.de 
 */ 
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 
        } 
        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; 
    } 
};