function popup(page,largeur,hauteur,options)
{
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}

function favoris(texte,url) 
{ 
   if (window.sidebar) 
   { 
   window.sidebar.addPanel(texte, url,""); 
   } 
   else if( document.all ) 
   { 
   window.external.AddFavorite(url, texte); 
   } 
   else 
        { 
   return true; 
   } 
}