function Fenetre(url,nom,FenOpts){
var MinFen;
        MinFen = window.open(url, nom, FenOpts);
		if (navigator.appVersion.indexOf("(X11") != -1 ||
                navigator.appVersion.indexOf("(Mac") != -1)
                MinWin = window.open(url, nom, FenOpts);
          if (navigator.appName == "Netscape" && (parseInt(navigator.appVersion) >=3 )) {
                MinFen.focus()
          }
}

NS = (document.layers) ? true : false;
IE = (document.all) ? true : false;
NS6 = (!document.all && document.getElementById) ? true : false;