function displayarc(changeday,stat) {
var dayIndex = changeday.day.selectedIndex;
var monthIndex = changeday.month.selectedIndex;
var yearIndex = changeday.year.selectedIndex;

var day = changeday.day.options[dayIndex].value;
var month = changeday.month.options[monthIndex].value;
var year = changeday.year.options[yearIndex].value;

var fulldate = year + month + day + "a";
if (stat == 1) {
    var fulldate = "none";
}

document.getElementById("20080518a").style.display="none";
document.getElementById("20080517a").style.display="none";
document.getElementById("20080516a").style.display="none";
document.getElementById("20080515a").style.display="none";
document.getElementById("20080514a").style.display="none";
document.getElementById("20080513a").style.display="none";
document.getElementById("20080512a").style.display="none";
document.getElementById("20080511a").style.display="none";
document.getElementById("20080510a").style.display="none";
document.getElementById("20080509a").style.display="none";
document.getElementById("20080508a").style.display="none";
document.getElementById("20080507a").style.display="none";
document.getElementById("20080506a").style.display="none";
document.getElementById("20080505a").style.display="none";
document.getElementById("20080504a").style.display="none";
document.getElementById("none").style.display="none";
document.getElementById(fulldate).style.display="block";
return true;
}