code: function(directions) {
  	    var elem = this.grouper.layer.el;
  	    
  	    if (directions.left)
  		elem.scrollLeft = Math.max(0, elem.scrollLeft-this.scrollAmount);
  	    else if (directions.right)
  		elem.scrollLeft = Math.min(elem.scrollWidth, elem.scrollLeft+this.scrollAmount);
  		
  	    if (directions.up)
  		elem.scrollTop = Math.max(0, elem.scrollTop-this.scrollAmount);
  	    else if (directions.down)
  		elem.scrollTop = Math.min(elem.scrollHeight, elem.scrollTop+this.scrollAmount);
  	}
docs: Scroll the associated WireIt.Layer