To install this plugin go to Admin Panel > Modules > JavaScript codes management and create a new script.

Title : Category tabs
Placement : In the homepage


Cod:

$(function() {
  'DEVELOPED BY ANGE TUTEUR';
  'NO DISTRIBUTION WITHOUT CONSENT OF THE AUTHOR';
  'ORIGIN : http://fmdesign.forumotion.com/t472-category-tabs#5772';
 
  // automatically detects the version
  var version = $('.bodylinewidth')[0] ? 0 : document.getElementById('wrap') ? 1 : $('div.pun')[0] ? 2 : document.getElementById('ipbwrapper') ? 3 : document.getElementById('fa_edge') ? 4 : 'badapple';
 
  if (version == 'badapple') {
    if (window.console && console.warn) console.warn('The plugin "fa_tabs" is not supported for your forum version.');
    return;
  }
 
  window.fa_tabs = {
    active : my_getcookie('fa_tab_active') || 0, // active tab
    list : [], // category list
    version : version, // forum version
 
    // language settings
    lang : {
      title : 'Select a Category',
      placeholder : 'Category',
      all : 'All'
    },
 
    // selectors
    select : {
      content : !version ? '#content-container td:has(> img[height="5"])' : 'main-content',
      category : ['.forumline:has(.secondarytitle)', '.forabg', '.main:has(.tcr) .main-head', '.borderwrap:has(.index-box)', '.forum-category'][version]
    },
 
    // function for changing the active category
    change : function(index) {
      my_setcookie('fa_tab_active', index); // save the active tab to a cookie
 
      // actions to run if the tab is not "all"
      if (index != 'all') {
        if (fa_tabs.active == 'all') {
          fa_tabs.tab[0].previousSibling.className = '';
          fa_tabs.display('none');
        } else {
          fa_tabs.tab[fa_tabs.active].className = '';
          fa_tabs.list[fa_tabs.active].style.display = 'none';
        }
 
        fa_tabs.tab[index].className = 'fa_tabactif';
        fa_tabs.list[index].style.display = '';
 
        if (fa_tabs.version == 2) {
          if (fa_tabs.active != 'all') fa_tabs.list[fa_tabs.active].nextSibling.style.display = 'none';
          fa_tabs.list[index].nextSibling.style.display = '';
        }
      } else {
        if (fa_tabs.active != 'all') fa_tabs.tab[fa_tabs.active].className = '';
        fa_tabs.tab[0].previousSibling.className = 'fa_tabactif';
        fa_tabs.display('');
      }
 
      fa_tabs.active = index;
    },
 
    // change the display of all categories
    display : function(state) {
      for (var i = 0, j = fa_tabs.list.length; i < j; i++) {
        fa_tabs.list[i].style.display = state;
        if (version == 2) fa_tabs.list[i].nextSibling.style.display = state;
      };
    },
 
    // stop tab scrolling
    stop : function() {
      if (fa_tabs.interval) {
        window.clearInterval(fa_tabs.interval);
        fa_tabs.interval = null;
      }
    },
 
    // scroll tablist
    scroll : function(by, max) {
      if (!fa_tabs.interval) {
        var node = document.getElementById('fa_tablist').firstChild.firstChild;
 
        fa_tabs.interval = window.setInterval(function() {
          var margin = +node.style.marginLeft.replace(/px/, '');
          (by < 0 && margin <= max) || (by > 0 && margin >= max) ? fa_tabs.stop() : node.style.marginLeft = margin + by + 'px';
        }, 1);
      }
    }
 
  };
 
  // startup variables
  var frag = document.createDocumentFragment(),
      container = $('<div id="fa_category_tabs"><h2 id="fa_tabs_title">' + fa_tabs.lang.title + '</h2></div>')[0],
      tablist = $('<div id="fa_tablist"><div class="inner_tabs"><div></div></div></div>')[0],
      catglist = $('<div id="fa_catglist" />')[0],
 
      a = $(fa_tabs.select.category, !version ? $(fa_tabs.select.content)[0] : document.getElementById(fa_tabs.select.content)),
      i = 0,
      j = a.length,
      htmlStr = '<a href="javascript:fa_tabs.change(\'all\');">' + fa_tabs.lang.all + '</a>';
 
  // drop off the main container before the first category
  a[0] && a[0].parentNode.insertBefore(container, a[0]);
 
  // loop through each category
  for (; i < j; i++) {
    if (version == 2) var next = a[i].nextSibling;
 
    // create our tabs
    htmlStr += '<a href="javascript:fa_tabs.change(' + i + ');">' + ($('H2:first', a[i]).text() || fa_tabs.lang.placeholder + ' ' + i) + '</a>';
 
    // append the category to the list and hide it
    catglist.appendChild(a[i]);
    a[i].style.display = 'none';
 
    // get the next sibling as well for punbb
    if (version == 2) {
      catglist.appendChild(next);
      next.style.display = 'none';
    }
 
    fa_tabs.list[i] = a[i]; // cache the category to the array
  }
 
  if (fa_tabs.list[0]) {
    tablist.firstChild.firstChild.innerHTML = htmlStr; // fill in the tablist
    fa_tabs.tab = [].slice.call(tablist.getElementsByTagName('A')); // create an array for the tabs
    fa_tabs.tab.shift(); // remove the all tab
 
    fa_tabs.change(fa_tabs.active); // setup the active tab
 
    // finally add the content to the document
    frag.appendChild(tablist);
    frag.appendChild(catglist);
    container.appendChild(frag);
 
    window.setTimeout(function() {
      if (tablist.firstChild.scrollWidth > tablist.firstChild.clientWidth) {
        tablist.className = 'fa_tabs_overflow';
        tablist.firstChild.firstChild.style.marginLeft = '0px';
        tablist.insertAdjacentHTML('beforeend', '<a class="tab_scroller scroll_left" href="#" onmousedown="fa_tabs.scroll(1, 0); return false;" onclick="fa_tabs.stop(); return false;" onmouseout="fa_tabs.stop();"><</a><a class="tab_scroller scroll_right" href="#" onmousedown="fa_tabs.scroll(-1, -' + (tablist.firstChild.scrollWidth - tablist.firstChild.clientWidth) + '); return false;" onclick="fa_tabs.stop(); return false;" onmouseout="fa_tabs.stop();">></a>');
      }
    }, 100);
  }
});
 
$('head').append('<style type="text/css">#fa_tabs_title{color:#333;font-size:24px;font-weight:400;font-family:arial,sans-serif;margin:3px;line-height:24px}.inner_tabs a,a.tab_scroller{font-family:arial,sans-serif;height:30px;line-height:30px}#fa_tablist{position:relative;white-space:nowrap}#fa_tablist.fa_tabs_overflow{padding:0 18px}.inner_tabs{overflow:hidden;padding-bottom:1px;margin-bottom:-1px}a.tab_scroller{color:#FFF;background:#333;font-size:16px;text-align:center;position:absolute;bottom:2px;width:15px;opacity:.1}a.tab_scroller.scroll_left{left:0}a.tab_scroller.scroll_right{right:0}#fa_tablist:hover a.tab_scroller{opacity:.7}#fa_tablist a.tab_scroller:hover{opacity:1}#fa_catglist{background:#EEE;border:1px solid #CCC;border-radius:3px;padding:10px 6px}.inner_tabs a{color:#333 !important;background:#DDD;border:1px solid #CCC;border-bottom:none;border-radius:3px 3px 0 0;text-decoration:none!important;font-size:12px;font-weight:700;display:inline-block;padding:0 10px;margin:3px 3px 0}.inner_tabs a.fa_tabactif,.inner_tabs a:hover{background:#EEE;position:relative;bottom:-1px;opacity:1}</style>');