How to print or printpreview dhtmlXTabBar

in the dhtmlXTabBar, How to print or printpreview the content of a Tab ?

If you are using non-iframes mode it can be printed only with top page.
In iframe based mode you can try

Thanks for the help, but Cannot Print or Preview  the contents of a Tab,please test the code below

              var Htmlpage=tabbar.tabWindow(tabbar.getActiveTab());

              var pObject="<OBJECT ID=“Oprint” WIDTH=0 HEIGHT=0 CLASSID=“CLSID:8856F961-340A-11D0-A96B-00C04FD705A2” >";
               var printerCTL=Htmlpage.document.getElementById(“Oprint”);
               try {
              if ( ! printerCTL)
              {Htmlpage.document.body.insertAdjacentHTML(“afterBegin”,pObject); }