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;
    }
};
		$(document).ready(function() {
			
			// the div that will be hidden/shown
			var panel = $("#promo");
			//the button that will toggle the panel
			var button = $("#top a");
			// do you want the panel to start off collapsed or expanded?
			var initialState = "expanded"; // "expanded" OR "collapsed"
			// the class added when the panel is hidden
			var activeClass = "hidden";
			// the text of the button when the panel's expanded
			var visibleText = "fermer";
			// the text of the button when the panel's collapsed
			var hiddenText = "fermer";
			
			//---------------------------
			// don't    edit    below    this    line,
			// unless you really know what you're doing
			//---------------------------
			
			if($.cookie("panelState") == undefined) {
				$.cookie("panelState", initialState);
			} 
			
			var state = $.cookie("panelState");
			
			if(state == "collapsed") {
				panel.hide();
				button.text(hiddenText);
				button.addClass(activeClass);
			}
		   
			button.click(function(){
				if($.cookie("panelState") == "expanded") {
					$.cookie("panelState", "collapsed");
					button.text(hiddenText);
					button.addClass(activeClass);
				} else {
					$.cookie("panelState", "expanded");
					button.text(visibleText);
					button.removeClass(activeClass);
				}
				
				panel.slideToggle("slow");
				
				return false;
			});
		});