define(function(require, exports, module) {

	var logger = function(lv,args){};

	logger.prototype={
		log:function(){},
		debug:function(){},
		info:function(){},
		warn:function(){},
		error:function(){}
	};

	var enable = false;
	window.enableLog=function(stat){
		enable = !!stat;
	}


	if(location.href.indexOf("debug")!=-1 || (document.referrer||"").indexOf("debug")!=-1 ){
		enable = true;
	}


	var loggerName = ["log", "info", "debug", "warn","error"];
	


	var exp ;
	var console = window.console;

	if(console && enable){
		exp = console;
	}else{
		exp = new logger();
	}

	for (var i in loggerName) {
		var n = loggerName[i];
		if(!exp[n]){
			exp[n]=logger.prototype[n];
		}
	}

	/**
	* 格式化数字，显示未两位数，小于10前面加0
	*/
	var fillLen = function(n){
		if(n<10){
			n = "0"+n;
		}
		return String(n);
	}
	var fillLen3 = function(n){
		if(n <10){
			n = "00"+n;
		}else if(n < 100){
			n = "0"+n;
		}
		return String(n);
	}

	exp.time = function(){
		var d = new Date();
		var r = d.getFullYear()+"-"+ fillLen(1+d.getMonth())+"-"+fillLen(d.getDate());
		r+=" "+fillLen(d.getHours())+":"+fillLen(d.getMinutes())+":"+fillLen(d.getSeconds())+"."+fillLen3(d.getMilliseconds());
		return r;
		
	}

	module.exports = exp;

});