if (document.images) {
	var path="./Botones/";

	var img1a=new Image();
	img1a.src="./Botones/btn_institucion.gif";
	var img1b=new Image();
	img1b.src=path+"btn_institucion_1.gif";

	var img2a=new Image();
	img2a.src=path+"btn_llegar.gif";
	var img2b=new Image();
	img2b.src=path+"btn_llegar_1.gif";

	var img3a=new Image();
	img3a.src=path+"btn_aloja.gif";
	var img3b=new Image();
	img3b.src=path+"btn_aloja_1.gif";

	var img4a=new Image();
	img4a.src=path+"btn_actividades.gif";
	var img4b=new Image();
	img4b.src=path+"btn_actividades_1.gif";
	
	var img5a=new Image();
	img5a.src=path+"btn_punilla.gif";
	var img5b=new Image();
	img5b.src=path+"btn_punilla_1.gif";

	var img6a=new Image();
	img6a.src=path+"btn_otros.gif";
	var img6b=new Image();
	img6b.src=path+"btn_otros_1.gif";
	
	var img7a=new Image();
	img7a.src=path+"btn_ciudades.gif";
	var img7b=new Image();
	img7b.src=path+"btn_ciudades_1.gif";

	var img8a=new Image();
	img8a.src=path+"btn_estancias.gif";
	var img8b=new Image();
	img8b.src=path+"btn_estancias_1.gif";

	var img9a=new Image();
	img9a.src=path+"btn_convenios.gif";
	var img9b=new Image();
	img9b.src=path+"btn_convenios_1.gif";

	var img10a=new Image();
	img10a.src=path+"btn_boletines.gif";
	var img10b=new Image();
	img10b.src=path+"btn_boletines_1.gif";
}

function inor(img) {
	switch (img)  {
		case "img1":
			document[img].src=img1a.src; 
			break; 
			
		case "img2":
			document[img].src=img2a.src; 
			break; 

		case "img3":
			document[img].src=img3a.src; 
			break; 

		case "img4":
			document[img].src=img4a.src; 
			break; 

		case "img5":
			document[img].src=img5a.src; 
			break; 

		case "img6":
			document[img].src=img6a.src; 
			break; 

		case "img7":
			document[img].src=img7a.src; 
			break; 
			
		case "img8":
			document[img].src=img8a.src; 
			break; 

		case "img9":
			document[img].src=img9a.src; 
			break; 

		case "img10":
			document[img].src=img10a.src; 
			break; 
	}
}			
					
function ires(img) {
	switch (img) {
		case "img1":
			document[img].src=img1b.src; 
			break;

		case "img2":
			document[img].src=img2b.src; 
			break;				

		case "img3":
			document[img].src=img3b.src; 
			break; 

		case "img4":
			document[img].src=img4b.src; 
			break; 

		case "img5":
			document[img].src=img5b.src; 
			break; 

		case "img6":
			document[img].src=img6b.src; 
			break; 

		case "img7":
			document[img].src=img7b.src; 
			break;

		case "img8":
			document[img].src=img8b.src; 
			break; 
			
		case "img9":
			document[img].src=img9b.src; 
			break; 

		case "img10":
			document[img].src=img10b.src; 
			break; 
	}
}