Countdown Timer Code

This is the code im using:

this.onEnterFrame = function() {		var today:Date = new Data();	var currentYear = today.getFullYear();	var currentTime = today.getTime();		var targetDate:Date = new Date(currentYear,10,11); 	var targetTime = targetDate.getTime();		var timeLeft = targetTime - currentTime;		var sec = Math.floor(timeLeft/1000);	var min = Math.floor(sec/60);	var hrs = Math.floor(min/60);		var days = Math.floor(hrs/24);	sec = string(sec % 60);	if (sec.length < 2) {		sec = "0" + sec;	}	min = string(min % 60);	if (min.length < 2) {		min = "0" + min;	}	hrs = string(hrs % 24);    if (hrs.length < 2) {		hrs = "0" + hrs;	}	days = string(days);		var counter:String = days + ":" + hrs + ":" + min + ":" sec;	time_txt.text = counter; 	}

and I get this error:Description: 1086: Syntax error: expecting semicolon before sec. Source: var counter:String = days + “:” + hrs + “:” + min + “:” sec;What am I doing wrong? Is the code wrong?Thanks for the help!