// webmail.oca.eu   -> choix.htm
// webmail.obs-azur -> https://webmail-g.oca.eu
// webmail/         -> webmail.cgi

i = document.location.href.indexOf("://") - 4;

if (document.location.href.substring(7+i,17+i) == 'webmail.oc'    ) window.location.href = 'choix.htm';
if (document.location.href.substring(7+i,20+i) == 'webmail.obs-a' ) window.location.href = 'https://webmail-g.oca.eu/';
//if (document.location.href.substring(7+i,15+i) == 'webmail/'      ) window.location.href = '/scripts/webmail.cgi';
if (document.location.href.substring(7+i,15+i) == 'webmail/'      ) window.location.href = 'choix.htm';