function validate() {
    var fe = document.getElementById('from_email').value.match(/\w\@\w/);
    var fn = document.getElementById('first_name').value.match(/\w\w/);
    var ln = document.getElementById('last_name').value.match(/\w\w/);
    var f1 = document.getElementById('friend1').value.match(/\w\@\w/);
    var f2 = document.getElementById('friend2').value.match(/\w\@\w/);
    var f3 = document.getElementById('friend3').value.match(/\w\@\w/);
    var f4 = document.getElementById('friend4').value.match(/\w\@\w/);
    var f5 = document.getElementById('friend5').value.match(/\w\@\w/);
    
    if( !fe ) {
        alert( 'Please provide your email address ');
        document.getElementById('from_email').focus();
        return false;
    }
    if( !fn ) {
        alert( 'Please provide your first name ');
        document.getElementById('first_name').focus();
        return false;
    }
    if( !ln ) {
        alert( 'Please provide your last name ');
        document.getElementById('last_name').focus();
        return false;
    }
    if( !f1 && !f2 && !f3 && !f4 && !f5 ) {
        alert( 'Please provide at least one email address to which to send the message' );
        document.getElementById('friend1').focus();
        return false;
    }
    else {
        return true;
    }
}