function Tabs()
{
   var tabsContainers = getElementsByClass('tabs'),
       tabs = [],
       main = $('main');

   var i, j, n = tabsContainers.length, len, ln;
   for(i = 0; i != n; ++i)
   {
     tabs[i] = tabsContainers[i].getElementsByTagName('table');

      var width = 0, wdh = 0,
      len = tabs[i].length;

      for(j = 0; j != len; ++j)
      {
        width += tabs[i][j].offsetWidth;
      }

      width += len * 5;

      width = main.offsetWidth - width;
      //alert(width);
      ln = len - 1;
      for(j = 0; j <= ln; ++j)
      {
         if(ln == j)
         {
           tabs[i][j].style.width =  Math.ceil(main.offsetWidth - wdh) + 'px';
         }
         else
         {
           wdh += tabs[i][j].offsetWidth + Math.ceil(width / len) + 5;
           tabs[i][j].style.width = tabs[i][j].offsetWidth + Math.ceil(width / len) + 'px'
         }
      }
   }
   
   return tabs.length;
}