// JavaScript Document
function DoCustomValidation()
{
  var frm = document.forms["mainform"];
  if(frm.name.value == "* Full Name")
  {
    alert('Please enter your Full Name.');
    return false;
  }
  else
  if(frm.phone.value == "* Phone Number")
  {
    alert('Please enter your Phone No.');
    return false;
  }
  else
  {
    return true;
  }
}