var tabs = new Array("show_recent_question","popular_questionss");

  function displayTab(tabName) {
    for ( i = 0; i < tabs.length; i++ ) {
      var tab = document.getElementById(tabs[i]);
      if ( tabName == tabs[i] ) {
        tab.style.display = 'inline';
      } else {
        tab.style.display = 'none';
      }
    }
  }
  
  var tabs2 = new Array("overview","show_recent_question","popular_questionss","blog","asked_ques");

  function displayTab2(tabName2) {
	 // alert("naima");
    for ( i = 0; i < tabs2.length; i++ ) {
      var tab2 = document.getElementById(tabs2[i]);
      if ( tabName2 == tabs2[i] ) {
        tab2.style.display = 'inline';
      } else {
        tab2.style.display = 'none';
      }
    }
  }
  
   var tabs3 = new Array("show_recent_questions","popular_questions");

  function displayTab3(tabName3) {
    for ( i = 0; i < tabs3.length; i++ ) {
      var tab3 = document.getElementById(tabs3[i]);
      if ( tabName3 == tabs3[i] ) {
        tab3.style.display = 'inline';
      } else {
        tab3.style.display = 'none';
      }
    }
  }