// modelData deve essere DD-MM-AAAA
function getAge(modelData)
{
//alert(modelData.length);
    var bday= parseInt(modelData.substring(0,2));
    var bmonth= parseInt(modelData.substring(3,5));
    var byear= parseInt(modelData.substring(6,modelData.length)); 

    //alert("bday: "+bday+"   bmonth:"+bmonth+"    byear:"+byear);
    var age;
    var now = new Date();
    var tday=now.getDate();
    var tmonth=(now.getMonth());
    var tyear=(now.getFullYear());
    if ((tmonth > bmonth)||(tmonth==bmonth & tday>=bday)) age=byear
    else age=byear+1;

    modelAge= tyear-age;
    return (modelAge);

}