htmls guest gear (all pages that look like this http://htmlgear.tripod.com/guest/control.guest?a=sign) has an exploit where you can inject html and javascript into there guestbook by doing the following <br iframe src=javascript:alert("hi")>></br> you can put any html or javascript in there. you can find vunrable page by doing the following google search site:http://htmlgear.tripod.com/guest/control.guest?a=sign