var multi = 0;

function verify(form) {
	var themessage = "The following field(s) are required: ";
	if (form.name.value=="") {
		themessage = themessage + "\n - Name";
	}
	if (form.email.value=="") {
		themessage = themessage + "\n - Email Address";
	}
	if (form.comments.value=="") {
		themessage = themessage + "\n - Comments";
	}
	if (themessage == "The following field(s) are required: ") {
		return check_multi();
	}
	else {
		alert(themessage);
		return false;
	}
}

function check_multi() {
	multi++;
	if(multi > 1) {
		alert("This form has already been submitted.\nYour submission may take a while, please be patient.");
		return false;
	}
	return true;
}