var _x = 0;

function initSliderBox(container)
{
  var list = $(container).down('ul');
  var listWidth = ((1 + Math.floor($$('#'+container+' ul li').length/3)) * 85);
  
  list.setStyle({ 'width': listWidth + 'px'});
  

  $(container).down('.slideLeft').onclick = function()
        {
          _x += 74;
          
          if (_x > -10) _x = 0;
          
          new Effect.Move(list, {
              x: _x, y: 0, mode: 'absolute',
              transition: Effect.Transitions.sinoidal
            });
          
          return false;
        }
  $(container).down('.slideRight').onclick = function() 
        {
          _x -= 74;
          if(_x < (-1 * (listWidth - 370))) _x = (-1 * (listWidth - 370));
            

          new Effect.Move(list, {
            x: _x, y: 0, mode: 'absolute',
            transition: Effect.Transitions.sinoidal
          });
          
          return false;
        }
}