function Login(){
var done=0;
var username=document.login.username.value;
username=username.toLowerCase();
var password=document.login.password.value;
password=password.toLowerCase();
<!--Remplacer ci-dessous les noms de membres et mot de passe-->
if (username=="alex" && password=="alex") { window.location="index_membre.htm"; done=1; }
if (username=="member2" && password=="password2") { window.location="page2.html"; done=1; }
if (username=="member3" && password=="password3") { window.location="page3.html"; done=1; }
if (done==0) { alert("Login invalide"); }
}