function trim(s)
{
    while (s.substring(0,1) == ' ') { s = s.substring(1,s.length); }
    while (s.substring(s.length-1,s.length) == ' ') { s = s.substring(0,s.length-1); }                     
return s;
}

function form_check_newsletter_small()
 {
   var d = document.newsletterSmall;
   var str = trim(d.email.value);
   if(str == ''){
     alert( "You must fill in your Email address.");
     d.email.focus();
     return false;
    }
    else{
    d.email.value=str;
    return true;
    }
 }