var desplegado = false;
		var cual_despl = '';
		function loop(id_div)  
		{
			if(desplegado==true){
				if(cual_despl == id_div){
					Effect.SlideUp(id_div, { duration: 0.3 });
					cual_despl = '';
					desplegado = false;
				}
				else {
					Effect.SlideUp(cual_despl, { duration: 0.3 });
					Effect.SlideDown(id_div, { duration: 0.3 });
					cual_despl = id_div;
					desplegado = true;
				}
			}
			else {
				cual_despl = id_div;
				Effect.SlideDown(id_div, { duration: 0.3 });
				desplegado = true;
			}
			
		}