function ImageSlideShow(nbImagesT, idTargetT, prefixT, suffixT, pathT){
   var current  = 1;  
   var nbImages = nbImagesT;
   var idTarget = idTargetT;
   var prefix   = prefixT;
   var suffix   = suffixT;
   var path     = pathT;
   
   this.next = function(){
      current++;
      if(current > nbImages)
         current = 1;
      changeImage();      
   }
   
   this.previous = function(){
      current--;
      if(current <= 0)         
         current = nbImages;
         
      changeImage();
   }
   
   var changeImage = function(){
       var image = document.getElementById(idTarget);
       image.src = path + prefix + current + suffix
   }
}