Please add the following code on load of contact:-
function changeTitle(){
if (Xrm.Page.getAttribute("birthdate").getValue() != null)
{
var date1 = Xrm.Page.getAttribute("birthdate").getValue();
var date2 = new Date();
//Set 1 day in milliseconds
var one_day=1000*60*60*24
//Calculate difference btw the two dates, and convert to days
var difference = Math.ceil((date2.getTime()-date1.getTime())/(one_day))-5 ;
var age = difference/365 ;
var title= $(".ms-crm-Form-Title-Label");
if (age >= 18){
title[0].innerHTML = "Adult";
}
else {
title[0].innerHTML = "Youth";
}
}
}
Please mark the question as completed if it fullfills your requirements. Shaukat
Regards Faisal