function anima_sx(obj){
   		$(obj).animate(
		  {
			 left: '-=150px'
		  },
		  {
			duration: 500, 
		    complete: function() {
		    	anima_sx($(obj).next());
		    }
		   }
		);
   	}	
   	
   	function anima_dx(obj){
   		$(obj).animate(
		  {
			 left: '+=150px'
		  },
		  {
			duration: 500, 
		    complete: function() {
		    	anima_dx($(obj).next());
		    }
		   }
		);
   	}
		
		 function carica(){
		 	anima_sx('.menu_sx div:first','sx');
		 	anima_dx('.menu_dx div:first','dx');
		 }
		 
	 function carica(){
		 	anima_sx('.menu_sx div:first','sx');
		 	anima_dx('.menu_dx div:first','dx');
		 }	 
		 
  setTimeout("carica()", 3000);