function validate_form(form_pointer)
{	if(form_pointer.fullname.value.length == 0)
	{	form_pointer.fullname.focus();
		alert("Please enter your name.");
		return false;
	}
	if(form_pointer.email.value.length == 0)
	{	form_pointer.email.focus();
		alert("Please enter your email address.");
		return false;
	}
	if(form_pointer.subject.value.length == 0)
	{	form_pointer.subject.focus();
		alert("Please enter a subject.");
		return false;
	}
	if(form_pointer.message.value.length == 0)
	{	form_pointer.message.focus();
		alert("Please enter a message.");
		return false;
	}
	return true;
}