function verifydate(y,m,d)
{
  return new Date(y,m-1,d).getMonth() == m-1;
};
function qacheckdate()
{
    if(document.getElementById('dobyear').value=="")
    {
        alert('Invalid Date. Please select a proper interview date.');
        return false;
    }
    if(verifydate(document.getElementById('dobyear').value,document.getElementById('dobmonth').value,document.getElementById('dobday').value)==false)
    {
        alert('Invalid Date. Please select a proper interview date.');
        return false;
    }
}