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

function validate_form(thisform)
{
with (thisform)
  {
  if (validate_required(fname,"First name must be filled out!")==false)
  {fname.focus();return false;}
  if (validate_required(last_name,"Last name must be filled out!")==false)
  {last_name.focus();return false;}
  if (validate_required(dob,"Date of birth must be filled out!")==false)
  {dob.focus();return false;}
  if (validate_required(Street,"Street address must be filled out!")==false)
  {Street.focus();return false;}
  if (validate_required(Suburb,"Suburb must be filled out!")==false)
  {Suburb.focus();return false;}
  if (validate_required(State,"State must be filled out!")==false)
  {State.focus();return false;}
  if (validate_required(Postcode,"Post code must be filled out!")==false)
  {Postcode.focus();return false;}
  if (validate_required(HPhone,"Phone number must be filled out!")==false)
  {HPhone.focus();return false;}
  if (validate_required(MPhone,"Mobile phone must be filled out!")==false)
  {MPhone.focus();return false;}
  if (validate_required(email,"A valid Email address must be filled out!")==false)
  {email.focus();return false;}
  if (validate_required(gymdetail,"Gym detail must be filled out!")==false)
  {gymdetail.focus();return false;}
  if (validate_required(foundGGG,"How you found us must be filled out!")==false)
  {foundGGG.focus();return false;}
  if (validate_required(number,"Verification code must be filled out!")==false)
  {number.focus();return false;}
  }
}