now = new Date();
function writeYears(obj, date)
{
		var years = date.getYear()+100
		for (var i=1949; i<2010; i++)
		{
			var opt = document.createElement("option")
			opt.text = opt.value = i
			obj.add(opt)
		}
}
function writeMonths(obj)
{
		for (var i=1; i<13; i++)
		{
			var opt = document.createElement("option")
			opt.text = opt.value = Math.floor(i/10) ? i : "0"+i
			obj.add(opt)
		}
}
function writeDate(obj, year, month)
{
	var date = new Date(""+year+"/"+(parseInt(month)+1)+"/"+0).getDate()
	var selectedIndex = (date-1)<obj.selectedIndex ? (date-1) : obj.selectedIndex
	var len = obj.options.length
	if (date>len)
		for (var i=len+1; i<=date; i++)
		{
			var opt = document.createElement("option")
			opt.text = opt.value = Math.floor(i/10) ? i : "0"+i
			obj.add(opt)
		}
	else
		for (var i=date; i<len; i++)
		{
			obj.remove(obj.length-1)
		}
	obj.selectedIndex = selectedIndex
}
function changeDate()
{
	var c_year	= eval("document.forms[0].c_year")
	var c_month	= eval("document.forms[0].c_month")
	var c_day	= eval("document.forms[0].c_day")

	writeDate(c_day, c_year.options(c_year.selectedIndex).value, c_month.options(c_month.selectedIndex).value)
}