function addzero( value )
{
while( value.length<2 ) value = String("0") + value;
return value;
}

function checkDateOrder(frm, ci_day, ci_month_year, co_day, co_month_year) {
if (document.getElementById) {
var frm = document.getElementById(frm);
var my = frm[ci_month_year].value.split("-");
var ci = new Date (my[0], my[1]-1, frm[ci_day].value, 12, 0, 0, 0);
my = frm[co_month_year].value.split("-");
var co = new Date (my[0], my[1]-1, frm[co_day].value, 12, 0, 0, 0);
if (ci >= co){
co.setTime(ci.getTime() + 1000 * 60 * 60 * 24);
frm[co_day].value =  co.getDate();
var com = co.getMonth()+1;
frm[co_month_year].value = co.getFullYear() + "-" + com;
}}}