function cambiarIframe(iframeName, url) {
	
  /*var fIsIE=true;
  if  (navigator.appName.toUpperCase() == 'NETSCAPE')  {fIsIE=false;}
  alert('pasa ' + fIsIE);
  if ( window.frames[iframeName] ) {
	   
    window.frames[iframeName].document.location.href (url);   
    return false;
  }
  else {
  eval('document.' + iframeName + '.src=' + url +'');
  return true;}*/
  document.getElementById(iframeName).src=url
}