if (document.images) {  

	image1on = new Image();  
	image1on.src = "images/historia_over.gif";  
	
	image2on = new Image();  
	image2on.src = "images/monasterio_over.gif";  

	image3on = new Image();  
	image3on.src = "images/juntas_over.gif";  
	
	image4on = new Image();
	image4on.src = "images/himno_over.gif";  
	
	image5on = new Image();
	image5on.src = "images/noticias_over.gif";
	
	image6on = new Image();
	image6on.src = "images/actividades_over.gif";
	
	image7on = new Image();
	image7on.src = "images/contacto_over.gif";
	
	image8on = new Image();
	image8on.src = "images/enlaces_over.gif";
	
/////////////////////////////////////////////////////

	image1off = new Image();  
	image1off.src = "images/historia_out.gif";  
	
	image2off = new Image();  
	image2off.src = "images/monasterio_out.gif";  

	image3off = new Image();  
	image3off.src = "images/juntas_out.gif";  
	
	image4off = new Image();
	image4off.src = "images/himno_out.gif";  
	
	image5off = new Image();
	image5off.src = "images/noticias_out.gif";
	
	image6off = new Image();
	image6off.src = "images/actividades_out.gif";
	
	image7off = new Image();  
	image7off.src = "images/contacto_out.gif";  
	
	image8off = new Image();  
	image8off.src = "images/enlaces_out.gif";  

	
}

function turnOn(imageName) {  

	if (document.images) {    

		document[imageName].src = eval(imageName + "on.src");  

	}
}

function turnOff(imageName) {  

	if (document.images) {    

		document[imageName].src = eval(imageName + "off.src");  

	}
}