{
var today=new Date()
var yesterday_milliseconds=today.getTime()-1000*60*60*24
var yesterday=new Date()
yesterday.setTime(yesterday_milliseconds)
var strYear=yesterday.getFullYear()
var strDay=yesterday.getDate()
var strMonth=yesterday.getMonth()+1
if(strMonth<10)
{
strMonth="0"+strMonth
}
var strYesterday=strYear+"-"+strMonth+"-"+strDay
alert(strYesterday)
}