function chkDate(f) {
var err="";
var y ;
var m ;
var d ;
var subDate = new Date();
var tomorrow = new Date();
var future = new Date();
tomorrow.setDate(tomorrow.getDate());//+1
future.setDate(future.getDate()+1800);
y = document.getElementById("date"+f+"_Year_ID").value;
m = document.getElementById("date"+f+"_Month_ID").value;
d = document.getElementById("date"+f+"_Day_ID").value;
subDate.setYear(y);
subDate.setMonth(m);
subDate.setDate(d);
var smltom = tomorrow.toString();
var result = smltom.substring(0,10);
var smlfut = future.toString();
var resultF = smlfut.substring(0,15);
   if (subDate < tomorrow){
   //err ="Please choose a date at least 24 hrs from today. After "+result+".";
    err ="The date you choose has already passed. Please choose a new date";
   alert(err);
 	return false;
   }
   else if (subDate > future) {
    err ="Please choose a date less than 5 years from now. Before "+resultF+".";
   alert(err);
 	return false;
   }
   else
   return true;
}