MediaWiki:Common.js

/* Any JavaScript here will be loaded for all users on every page load. */
var url = document.location;
var simple=/simple/i;
var nurl = String(url);
if(nurl.match(simple) != null){
 //#gumax-p-login { display: none }
 var login = document.getElementById('gumax-p-login');
 login.style.display="none";
}