function removeString(s, t) {

  i = s.indexOf(t);
  r = "";
  if (i == -1) return s;
  r += s.substring(0,i) + removeString(s.substring(i + t.length), t);
  return r;
  }

function AlternarImagen(img) {
	var searchString = '_ON';
	var imgSrc = img.src.toUpperCase();
	var index = imgSrc.indexOf(searchString);

	if ( index > 0 ) {
      img.src = removeString(imgSrc, searchString);

      //img.src = imgSrc.substring(0,imgSrc.indexOf(searchString)) + remove(imgSrc.substring(i + searchString.length), searchString);
	} else {

	  var ext = imgSrc.substring(imgSrc.length-4, imgSrc.length );

      var leading = imgSrc.substring(0, imgSrc.length-4);

      var trailing = imgSrc.substring(imgSrc.length-4, imgSrc.length);

	  img.src = leading + searchString + trailing;
	}
}


var menuItems =
[

['Pronósticos',"/pronosticos/index.html","","","","_self","0", , , , , ],
['Solicitudes de Servicio',"/solicitudes/index.html","","","","_self","0", , , , , ],
['Imágenes',"/imagenes","","","","_self","0", , , , , ],
['Estaciones Automáticas',"/estaciones_auto/index.html","","","","_self","0", , , , , ],
['Datos Climáticos',"/IMN/MainAdmin.aspx?__EVENTTARGET=LinksInfoClimatica","","","","_self","0", , , , , ],
['Atlas Climatológico',"/mapa_clima","","","","_self","0", , , , , ],
['|Atlas 1985',"/mapa_clima/altas_clima/atlas clima.html","","","","_self","1","0" , , , , ],
['|Atlas Interactivo 2008',"/mapa_clima/interactivo/index.html","","","","_self","1","0" , , , , ],
['Información Aeronáutica',"/informacion_aero/index.html","","","","_self","0", , , , , ],
['Tabla de Mareas',"/IMN/MainAdmin.aspx?__EVENTTARGET=LinksPrediccionesMareales","","","","_self","0", , , , , ],
['Educación',"/educacion","","","","_self","0", , , , , ],
['|El fenómeno del Enos',"/educacion/enos.html","","","","_self","1","0" , , , , ],
['|Clima en Costa Rica',"/educacion/CLIMA DE COSTA RICA.html","","","","_self","1","0" , , , , ],
['|Glosario',"/educacion/Glosario.html","","","","_self","1","0" , , , , ],
['|Huracanes',"/educacion/HURACANES.html","","","","_self","1","0" , , , , ],
['|Atlas de Nubes',"/educacion/atlas_nubes.html","","","","_self","1","0" , , , , ],


];