function validate() 
{
 if (document.CollioureForm.CustomerName.value.length <1)
 {
  alert("Please enter your Name");
  return false;
 }
 if (document.CollioureForm.CustomerEmail.value.length <1)
 {
  alert("Please enter your email address");
  return false;
 }
if (document.CollioureForm.CustomerPhone.value.length <1)
 {
  alert("Please enter your telephone number");
  return false;
 }

return true;
}