function formCheck(form) 
{
	if (form.name.value == "") 
	{
	alert("Please enter your name.");
	return false;
	}
	if (form.tel.value == "") 
	{
	alert("Please enter your telephone number.");
	return false;
	}
	if (form.email.value == "") 
	{
	alert("Please enter your email address.");
	return false;
	}
}