if (navigator.userAgent.indexOf('iPhone') != -1)
{
    window.location="http://mobile.claire-design.com/site-web.php";
}
else if (navigator.userAgent.indexOf('iPod') != -1) 
{
    window.location="http://mobile.claire-design.com/site-web.php";
}
else if (navigator.userAgent.indexOf('iPad') != -1) 
{
    window.location="http://ipad.claire-design.com/site-web.php";
}