//动画效果
var Tween = {
	Linear: function(t,b,c,d){ return c*t/d + b; },
	Quad: {
		easeIn: function(t,b,c,d){
			return c*(t/=d)*t + b;
		},
		easeOut: function(t,b,c,d){
			return -c *(t/=d)*(t-2) + b;
		},
		easeInOut: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t + b;
			return -c/2 * ((--t)*(t-2) - 1) + b;
		}
	},
	Cubic: {
		easeIn: function(t,b,c,d){
			return c*(t/=d)*t*t + b;
		},
		easeOut: function(t,b,c,d){
			return c*((t=t/d-1)*t*t + 1) + b;
		},
		easeInOut: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t*t + b;
			return c/2*((t-=2)*t*t + 2) + b;
		}
	},
	Quart: {
		easeIn: function(t,b,c,d){
			return c*(t/=d)*t*t*t + b;
		},
		easeOut: function(t,b,c,d){
			return -c * ((t=t/d-1)*t*t*t - 1) + b;
		},
		easeInOut: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
			return -c/2 * ((t-=2)*t*t*t - 2) + b;
		}
	},
	Quint: {
		easeIn: function(t,b,c,d){
			return c*(t/=d)*t*t*t*t + b;
		},
		easeOut: function(t,b,c,d){
			return c*((t=t/d-1)*t*t*t*t + 1) + b;
		},
		easeInOut: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
			return c/2*((t-=2)*t*t*t*t + 2) + b;
		}
	},
	Sine: {
		easeIn: function(t,b,c,d){
			return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
		},
		easeOut: function(t,b,c,d){
			return c * Math.sin(t/d * (Math.PI/2)) + b;
		},
		easeInOut: function(t,b,c,d){
			return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
		}
	},
	Expo: {
		easeIn: function(t,b,c,d){
			return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
		},
		easeOut: function(t,b,c,d){
			return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
		},
		easeInOut: function(t,b,c,d){
			if (t==0) return b;
			if (t==d) return b+c;
			if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
			return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
		}
	},
	Circ: {
		easeIn: function(t,b,c,d){
			return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
		},
		easeOut: function(t,b,c,d){
			return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
		},
		easeInOut: function(t,b,c,d){
			if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
			return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
		}
	},
	Elastic: {
		easeIn: function(t,b,c,d,a,p){
			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
			if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*Math.PI) * Math.asin (c/a);
			return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		},
		easeOut: function(t,b,c,d,a,p){
			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
			if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*Math.PI) * Math.asin (c/a);
			return (a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b);
		},
		easeInOut: function(t,b,c,d,a,p){
			if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
			if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*Math.PI) * Math.asin (c/a);
			if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
			return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
		}
	},
	Back: {
		easeIn: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158;
			return c*(t/=d)*t*((s+1)*t - s) + b;
		},
		easeOut: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158;
			return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
		},
		easeInOut: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158; 
			if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
			return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
		}
	},
	Bounce: {
		easeIn: function(t,b,c,d){
			return c - Tween.Bounce.easeOut(d-t, 0, c, d) + b;
		},
		easeOut: function(t,b,c,d){
			if ((t/=d) < (1/2.75)) {
				return c*(7.5625*t*t) + b;
			} else if (t < (2/2.75)) {
				return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
			} else if (t < (2.5/2.75)) {
				return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
			} else {
				return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
			}
		},
		easeInOut: function(t,b,c,d){
			if (t < d/2) return Tween.Bounce.easeIn(t*2, 0, c, d) * .5 + b;
			else return Tween.Bounce.easeOut(t*2-d, 0, c, d) * .5 + c*.5 + b;
		}
	}
}

//COOKIE
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;
    }
};

//Tab切换功能
jQuery._Tab = function(div,mouse){
	
	//定义CSS名称
	var _hover = "hover";

    //找到所有Tab和内容
    var btns = $(div + " > ul > li");
    var bodys = $(div + " > div");
	
	//选中tab和内容的第一项
	btns.first().addClass(_hover);
	bodys.first().addClass(_hover);
	
	//tab选中时切换相应的内容
	btns.each(function(i){
		var f = function(){
		    btns.removeClass(_hover);
			bodys.removeClass(_hover);
			$(btns.get(i)).addClass(_hover);
			$(bodys.get(i)).addClass(_hover);
		}
	    mouse == "over" ? $(this).mouseover(f) : $(this).mousedown(f);
	});
}