vars   = new Array("_T_5m.gif", "_AnomT_5m.gif", "_Vel_5m.gif"); 
years  = new Array("2001","2002","2003","2004","2005","2006","2007","2008","2009","2010","2011");
months = new Array("01","02","03","04","05","06","07","08","09","10","11","12");
days   = new Array("01","02","03","04","05","06","07","08","09","10",
                  "11","12","13","14","15","16","17","18","19","20",
                  "21","22","23","24","25","26","27","28","29","30","31");
//days   = new Array("01","04","07","10","13","16","19","22","25","28","29");
prfx   = "archive/maps/";
var iVar   = 0;
var iYear  = 0;
var iMode  = 0;
var iMonth = 0;
var iDay   = 0;

function test() {
document.forms[0].selVar.style.visibility = "collapse";
return 0;
}

function startTimer() {
//timerID=setTimeout('updateIndex()',100);
return 0;
}

function fillIndex() {
document.forms[0].selVar.selectedIndex   = iVar;
document.forms[0].selYear.selectedIndex  = iYear;
document.forms[0].selMode.selectedIndex  = iMode;
document.forms[0].selMonth.selectedIndex = iMonth;
document.forms[0].selDay.selectedIndex   = iDay;
updateMap();
//startTimer();
return 0;
}

function updateIndex() {
//alert(iDay)
if (iVar   != document.forms[0].selVar.selectedIndex   || 
    iYear  != document.forms[0].selYear.selectedIndex  || 
    iMode  != document.forms[0].selMode.selectedIndex  || 
    iMonth != document.forms[0].selMonth.selectedIndex || 
    iDay   != document.forms[0].selDay.selectedIndex)
{
  iVar   = document.forms[0].selVar.selectedIndex;
  iYear  = document.forms[0].selYear.selectedIndex;
  iMode  = document.forms[0].selMode.selectedIndex;
  iMonth = document.forms[0].selMonth.selectedIndex;
  iDay   = document.forms[0].selDay.selectedIndex;
}    
updateMap();
//startTimer();
return 0;
}

function updateMap() {	
document.forms[0].selMonth.disabled = (iMode==2);
document.forms[0].selDay.disabled   = (iMode>=1);
if ((iVar>=0) && (iYear>=0)) {
	if ((iMode==0) &&	(iMonth>=0) && (iDay>=0)) {
    gif=years[iYear]+months[iMonth]+days[iDay]+vars[iVar];
    gif=prfx+years[iYear]+"/"+gif;
  }  
	if (iMode==1) {
    gif=years[iYear]+months[iMonth]+vars[iVar];
    gif=prfx+years[iYear]+"/"+gif;
  }  
	if (iMode==2) {
    gif=years[iYear]+vars[iVar];
    gif=prfx+gif;
  }  
  //alert(gif);
  if (document.images.map.src!=gif) {
    document.images.map.src=gif    
  }
} 
return 0;
}