<!---------- JavaScript
function validaEmail(form){
var s = form.email.value;
var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
if (s.length == 0 ){
alert(form.SinMail.value);
form.email.focus();
}else{
	if (filter.test(s)){
	form.boton.disabled = true;	
	form.submit();
	}else{
	alert(form.ErrMail.value);
	form.email.focus();
	}
}
}
// JavaScript fin ---------->