function FTabs(normalClass, activeClass, clickIDs, elementIDs, currentIndex) {
var els=[];
var elsx=[];
var c=function(x){
  if(x===undefined){
    for (var i = 0; i < clickIDs.length; i++){
      els[i] = document.getElementById(clickIDs[i]);
      els[i].className = normalClass;
    }
    for (var i = 0; i < elementIDs.length; i++){
      elsx[i] = document.getElementById(elementIDs[i]);
      elsx[i].className = 'fktab-hide';
    }
    return c(currentIndex);
  }
  els[currentIndex].className = normalClass;
  elsx[currentIndex].className = 'fktab-hide';
  els[x].className = activeClass;
  elsx[x].className = 'fktab-show';
  currentIndex=x;
  return false;
};
return c;
}