function show(bmostrar, bmostrar_img, dheight, dwidth, nimagen) {
 if(document.getElementById) this.bmostrar=document.getElementById(bmostrar);
 else if(document.all) this.bmostrar=document.all[bmostrar];
 if(document.getElementById) this.bmostrar_img=document.getElementById(bmostrar_img);
 else if(document.all) this.bmostrar_img=document.all[bmostrar_img];
 this.bmostrar.style.visibility='visible';
 this.bmostrar.style.width=dwidth+'px';
 this.bmostrar.style.height='auto';
 this.bmostrar_img.style.height=dheight+'px';
 this.bmostrar_img.style.width=dwidth+'px';
 this.bmostrar_img.innerHTML='<img src="'+nimagen+'" />';
 window.location.href="#visor_fotografia";
}


function ocultar(capa) {
  if(document.getElementById) capa = document.getElementById(capa);
  else if(document.all) capa=document.all[capa];
  capa.style.height=0+'px';
  capa.style.visibility='hidden';
  window.document.href='lista_mascotas';
 }