if (document.images) {

            image1on = new Image();
            image1on.src = "../imagenes/menu/bn-home-i.gif";               
            image2on = new Image();
            image2on.src = "../imagenes/menu/bn-multimedia-i.gif";               
            image3on = new Image();
            image3on.src = "../imagenes/menu/bn-actividades-i.gif";     
            image4on = new Image();
            image4on.src = "../imagenes/menu/bn-deportes-i.gif";                             
            image5on = new Image();
            image5on.src = "../imagenes/menu/bn-banderas-i.gif";    
            image6on = new Image();
            image6on.src = "../imagenes/menu/bn-biblioteca-i.gif";
            image7on = new Image();
            image7on.src = "../imagenes/menu/bn-historia-i.gif";
            image8on = new Image();
            image8on.src = "../imagenes/menu/bn-idolos-i.gif";                 
	
            image1off = new Image(); 
            image1off.src = "../imagenes/menu/bn-home.gif"; 
            image2off = new Image(); 
            image2off.src = "../imagenes/menu/bn-multimedia.gif"; 
            image3off = new Image(); 
            image3off.src = "../imagenes/menu/bn-actividades.gif"; 
            image4off = new Image(); 
            image4off.src = "../imagenes/menu/bn-deportes.gif"; 
            image5off = new Image(); 
            image5off.src = "../imagenes/menu/bn-banderas.gif"; 
            image6off = new Image(); 
            image6off.src = "../imagenes/menu/bn-biblioteca.gif"; 
            image7off = new Image(); 
            image7off.src = "../imagenes/menu/bn-historia.gif";
            image8off = new Image(); 
            image8off.src = "../imagenes/menu/bn-idolos.gif";            
                         
     
            image1other = new Image();
            image1other.src = "../imagenes/menu/bn-inicio.gif";
            image2other = new Image();
            image2other.src = "../imagenes/menu/bn-galeria_multimedia.gif";
            image3other = new Image();
            image3other.src = "../imagenes/menu/bn-plantel_y_actividades.gif"; 
            image4other = new Image();
            image4other.src = "../imagenes/menu/bn-deportes_menores.gif"; 
            image5other = new Image();
            image5other.src = "../imagenes/menu/bn-institucional.gif"; 
            image6other = new Image();
            image6other.src = "../imagenes/menu/bn-biblioteca-o.gif"; 
            image7other = new Image();
            image7other.src = "../imagenes/menu/bn-historia-o.gif";
            image8other = new Image();
            image8other.src = "../imagenes/menu/bn-idolos-o.gif"; 
            
}


function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
            document["blanco"].src = eval(imgName + "other.src");
}
}


function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
            document["blanco"].src = "../imagenes/menu/bn-transparente.gif";
}
}