if (top.location != location) top.location.href = location.href; 

function checkData() 
{
var correct = true
if (document.MailingList.Nombre.value == "") {correct = false; alert("Por favor escribe tu nombre\nPlease put your Name")}
if (document.MailingList.Apellidos.value == "") {correct = false; alert("Por favor escribe tus apellidos\nPlease put your Last Name")}
if (document.MailingList.EmailName.value == "") {correct = false; alert("Por favor escribe la primera parte de tu dirección de e-mail. Ejemplo: chuchitoperez\nPlease put your email nickname. Example: jerry")}
if (document.MailingList.EmailDomain.value == "") {correct = false; alert("Por favor escribe la segunda parte de tu dirección de e-mail. Ejemplo: hotmail.com\nPlease put your email domain. Example: hotmail.com")}
return correct
}

function textCounter(field,cntfield,maxlimit)
{
if (field.value.length > maxlimit) // if too long...trim it!
field.value = field.value.substring(0, maxlimit);
// otherwise, update 'characters left' counter
else
cntfield.value = maxlimit - field.value.length;
}