// JavaScript Document
function cambia(lay,img){	
	document.getElementById('diagrama').src=img;
	}
function muestraE(e){
		window.document.getElementById(e).style.display='block';
	}
function ocultaE(e){
		window.document.getElementById(e).style.display='none';
	}	

	function muestraOculta(id){
		  element=document.getElementById(id);
				if (element.style.display=='none'){
					 element.style.display='';
				}else{
					 element.style.display='none';
				} 	
	}
function cambia2(img){
		document.getElementById('ilustra').src=img;
	}