function openNewWindow( url, name, height, width, resizeable ) {
    var param = 'height=' + height + ', width=' + width + ', resizeable=' + resizeable;
    window.open( url, name, param );
}

function openShareAFriend(){
    openNewWindow( 'tellAFriend.php', 'h2o', '470', '620', 'no' );
}

function focusNewsletterEmail(){
    if( document.getElementById('email').value == 'Please enter your email here' ){
        document.getElementById('email').value = '';
    }
}

function blurNewsletterEmail(){
    if( document.getElementById('email').value == '' ){
        document.getElementById('email').value = 'Please enter your email here';
    }
}