function ajouterAuxFavoris()
{

         var ua = navigator.userAgent.toLowerCase();
         var isIE = ((ua.indexOf("msie") != -1) && (ua.indexOf("opera") == -1) && (ua.indexOf("webtv") == -1));
         //tester si le navigateur est IE
         if(isIE)
         {
         window.external.AddFavorite(location.href,document.title);
         }
}


function visibilite(thingId)
{
        var targetElement;
        targetElement = document.getElementById(thingId) ;
        if (targetElement.style.display == "none")
        {
                targetElement.style.display = "" ;

        } else {
                targetElement.style.display = "none" ;
        }
}