//Redirecció per a dispositius iphone

if (is_iphone())
{
    if (!cookie())
    {
        if (!came_from_iphone())
        {
            set_cookie(365);
            redirect('http://www.lamalla.cat/xal/Xmalla/iPhone/iphone.html');
        }
    }
}



function is_iphone()
{
    return navigator.userAgent.match(/iPhone/i);
}



function cookie()
{
    var cookies = document.cookie.split(';');
    for (var i=0; i < cookies.length; i++) 
    {
        var c = cookies[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf('iphone=') == 0) return true;
    }

    return false;
}



function set_cookie(ttl)
{
    var expiration_date = new Date();
    expiration_date.setDate(expiration_date.getDate() + ttl);
    
    document.cookie = 'iphone=visited;expires='+expiration_date.toUTCString();
}



function came_from_iphone()
{
    return (document.referrer == 'http://www.lamalla.cat/xal/Xmalla/iPhone/iphone.html');
}



function redirect(dest)
{
    window.location = dest;
}