var browserName=navigator.appName; 
var browserVer=parseInt(navigator.appVersion); 
if ((browserName=="Netscape" && browserVer>=3) || (browserName=="Microsoft Internet Explorer" && browserVer>=4)) 
  version="n3"; 
else 
  version="n2"; 

function ouvrefenetre(idarticle) {
if (version=="n3") {
toto = window.open("fullscreen.php3?id_article="+idarticle+"","pleinecran","top=0,left=0,scrollbars=yes,toolbar=yes,menubar=yes,status=yes,resizable=yes,width='+screen.availWidth-10+',height='+screen.availHeight-10+'"); 
toto.focus();
}
else
  alert("Ce service doit etre utilise sur Internet Explorer");
}

function affichecarte(adresse) {
if (version=="n3") {
toto = window.open(adresse,"pleinecran","top=0,left=0,scrollbars=yes,toolbar=no,menubar=no,status=no,resizable=yes,width=480,height=590"); 
toto.focus();
}
else
  alert("Ce service doit etre utilise sur Internet Explorer");
}