how to add lines on tab bar

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http://stackoverflow.com – this is my tabbar example how do i add layout like this? lines on left right top and bottm on eact icon like this image http://imgur.com/XAKP9 this is my full code below just tell me how do i add lines my screen is like this http://imgur.com/VCDOK how i add lines like above image please help me this is my full source code public class TabSample extends TabActivity { /** Called when the activity is first created. */ public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setTabs() ; } private void setTabs() { (HowTos)