function validate_required(field,alerttxt)
{
with (field)
{
  if (value==null||value=="")
  {
  alert(alerttxt);return false;
  }
  else
  {
  return true;
  }
}
}


function validate_email(field,alerttxt)
{
with (field)
{
apos=value.indexOf("@");
dotpos=value.lastIndexOf(".");
if (apos<1||dotpos-apos<2) 
  {alert(alerttxt);return false;}
else {return true;}
}
}


function validate_num(field,alerttxt)
{
with (field)
{
if (isNaN(value)) 
  {alert(alerttxt);return false;}
else {return true;}
}
}

function validate_form(thisform)
{
with (thisform)
{
   if (validate_required(document.getElementById('00N40000001alFN'),"First name must be filled out!")==false)
      {document.getElementById('00N40000001alFN').focus();return false;}
      else if (validate_required(document.getElementById('00N400000021r6l'),"Last name must be filled out!")==false)
            {document.getElementById('00N400000021r6l').focus();return false;}
         else if (validate_required(email,"Email must be filled out!")==false)
            {email.focus();return false;}
                  else if (validate_email(email,"Not a valid e-mail address!")==false)
                     {email.focus();return false;}
                         else if (validate_required(phone,"Phone number must be filled out!")==false)
                           {phone.focus();return false;}
                              else if (validate_required(document.getElementById('00N40000001anui'),"Age must be filled out!")==false)
                                 {document.getElementById('00N40000001anui').focus();return false;}
                                       else if (validate_num(document.getElementById('00N40000001anui'),"Not a valid age!")==false)
                                          {document.getElementById('00N40000001anui').focus();return false;}
                                   

}
}