title: "FragmentTabHost cannot be resolved to a type"
body: <p>Just now am starting to build apps on android.I added ADT plugin form this site <code>https://dl-ssl.google.com/android/eclipse/</code>
         Then I did File->new->other->Android->Android Sample Project->Support13Demos[Android Support Library]  think that this some demo so that i could learn something but its says "FragmentTabHost cannot be resolved to a type" in one of the files I had 2 more errors which i resolved by downloading the 2 jars android-support-v4.jar and android-support-v13.jar.but this error doesnt seem go i think these to need a jar i am finding it very difficult to get that.Any suggestions on this would be helpful.
       As am trying Android for the time please do tell if i have assumed/trying something wrong thanks</p>