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;
    }
};
 
jQuery.fn.countDown = function(settings,to) {
	if(!to && to != settings.endNumber) {
		$.cookie('to',settings.startNumber);
		if($.cookie('to')){
			to=$.cookie('to');
		}
		else{
			to = settings.startNumber; 
		}
	}
	//alert(to)
	$.cookie('to',to);
	this.data("CR_currentTime",to);
	$(this).text(to).animate({"none":"none"},settings.duration,'',function() {
		if(to > settings.endNumber + 1) {
			$(this).countDown(settings,to - 1);
		}else{
			$.cookie('to',null);
			settings.callBack(this);
		}
	});		
	return this;
};
//计时&&重新计时
jQuery.fn.CRcountDown = function(settings) {
	settings = jQuery.extend({
		startNumber: 10,
		endNumber: 0,
		duration: 1000,
		callBack: function() { }
	}, settings);
	this.data("CR_duration",settings.duration);
	this.data("CR_endNumber",settings.endNumber);
	this.data("CR_callBack",settings.callBack);
	return this.stop().countDown(settings);
};
//计时暂停
jQuery.fn.pause = function(settings) {
	return this.stop();
};
//暂停后，重新开始
jQuery.fn.reStart = function() {
	return this.pause().CRcountDown({
		startNumber : this.data("CR_currentTime"),
		duration : 	this.data("CR_duration"),
		endNumber : this.data("CR_endNumber"),
		callBack : this.data("CR_callBack")
	});
};