<!--
var ns4 = (document.layers);
var ie4 = (document.all && !document.getElementById);
var ie5 = (document.all && document.getElementById);
var ns6 = (!document.all && document.getElementById);

function mostrar(id,id2,id3) {
  if (ie5 || ns6) {
    document.getElementById(id).style.visibility="visible";
    document.getElementById(id2).style.visibility="visible";   
    document.getElementById(id3).style.backgroundColor='#EAEAEA'; 
  } 
  else if (ie4) {
    document.all[id].style.visibility="visible";
    document.all[id2].style.visibility="visible";    
    document.all[id3].style.backgroundColor="#EAEAEA";  
  }
  else if (ns4) {
    document.layers[id].visibility="show";
    document.layers[id2].visibility="show";  
  }
} 

function ocultar(id,id2,id3) { 
  if (ie5 || ns6) {
    document.getElementById(id).style.visibility="hidden";
    document.getElementById(id2).style.visibility="hidden"; 
    document.getElementById(id3).style.backgroundColor='#FFFFFF';        
  }
  else if (ie4) {
    document.all[id].style.visibility="hidden";
    document.all[id2].style.visibility="hidden";
    document.all[id3].style.backgroundColor="#FFFFFF";
  }
  else if (ns4) {
    document.layers[id].visibility="hide";
    document.layers[id2].visibility="hide";
  }
}
//-->