function left_time()
{
 now=new Date();
 nowMonth=now.getMonth()+1;
 nowDay=now.getDate();
 if(nowMonth==4)
 leftDays=27+61-nowDay;
 else
 	{
 	if(nowMonth==5)
 	leftDays=27+31-nowDay;
 	else if(nowMonth==6)
		 {
		  if(nowDay>=27)
		  leftDays=0;
		  else
		  leftDays=27-nowDay;
		 }
	 else
	 leftDays=0;
	}
 document.write(leftDays);
} 

left_time();