function ajoutEvenement( obj, type, fn )
{
	if (obj.addEventListener)
		obj.addEventListener( type, fn, false );
	else if (obj.attachEvent)
	{
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

var idAnchor = 'presse_lire_version_texte';
var idBox    = 'presse_version_texte';

function inverserAffichage() {
  if(document.getElementById(idBox).style.display != 'block' ) {
    document.getElementById(idBox).style.display = 'block';
  }
  else {
    document.getElementById(idBox).style.display = 'none';
  }
}

function launch() {
  if(document.getElementById(idBox)) {
      document.getElementById(idBox).style.display = 'none';
  }
  if(document.getElementById(idAnchor)) {
      document.getElementById(idAnchor).setAttribute('href','javascript:inverserAffichage();');
  }
}

ajoutEvenement(window,'load',launch);