validare select in questa funzione

[djjunior]

Carissimi,
come posso validare il campo select (ora validato errato come si può vedere) in questo script?

function email() {

var email = document.forms[0].email;
var email_regExp = /^([\w_\.\-])+\@(([\w\-]{2,})+\.)+([\w]{2,})+$/;

if (!email_regExp.test(email.value)) {


	email.focus();
	document.getElementById("span-email").style.visibility="visible";	
	document.getElementById("span-camposelect").style.visibility="hidden";	
	
	
	return false;
} else {
return camposelect();
	}	
}

function camposelect() {

var camposelect = document.forms[0].camposelect;

if ((!camposelect.value.match(/[a-zA-Z]/))) {
	camposelect.focus();
	document.getElementById("span-email").style.visibility="hidden";	
	document.getElementById("span-camposelect").style.visibility="visible";	

	return false;
	} else {
function ok() { 
	document.getElementById("span-email").style.visibility="hidden";	
	document.getElementById("span-camposelect").style.visibility="hidden";	
	
return(true);
}

Grazie
G.