var jsoncode=(function(){
/*	setCookie：设置一个cookie	*		*/	this.setCookie=function (name,value){		var Days = 30; //此 cookie 将被保存 30 天		var exp = new Date();		exp.setTime(exp.getTime() + Days*24*60*60*1000);		document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();	}		/*	delCookie：删除一个cookie	*		*/	this.delCookie=function (name){		var exp = new Date();		exp.setTime(exp.getTime() - 1);		var cval=getCookie(name);		if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();	}	/*	getCookie：读取cookie	*		*/	this.getCookie=function (name){		var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));		if(arr != null)		return unescape(arr[2]);		return null;	}　　
　　　　　　　　　return this;
})(jsoncode);
window.jsoncode=jsoncode;