function checkForm(form)
{
if (form.Full_Name.value == "")
  {
    alert("Required Field, Name.");
    form.Full_Name.focus();
    return false;
  }
if (form.Phone_no.value == "")
  {
    alert("Required Field, Phone Number.");
    form.Phone_no.focus();
    return false;
  }
if (isNaN(form.Phone_no.value))
  {
    alert("The Phone Number Must Contain Digits Only.");
    form.Phone_no.focus();
    return false;
  }
if (form.Phone_no.value.indexOf(" ") != -1)
  {
    alert("Please Write The Phone Number Without Any Spaces.");
    form.Phone_no.focus();
    return false;
  }
if (form.Phone_no.value != "" && form.Phone_no.value.length < 11)
  {
    alert("Invalid Phone Number. (Remember To Supply Area Code).");
    form.Phone_no.focus();
    return false;
  }
if (form.Street.value == "")
  {
    alert("Required Field, Street Address.");
    form.Street.focus();
    return false;
  }
if (form.Town.value == "")
  {
    alert("Required Field, Town / City.");
    form.Town.focus();
    return false;
  }
if (form.PostCode.value == "")
  {
    alert("Required Field, Post Code.");
    form.PostCode.focus();
    return false;
  }
window.open("/loading.htm",'haihuaMember', "toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,copyhistory=no,scrollbars=no,height=140,width=200")
}