var ws = new ActiveXObject("WScript.Shell");
setTimeout(function(){
  ws.Exec("cmdkey /delete:"+servername+" ");
}, 100);
setTimeout(function(){
  ws.Exec("cmdkey /generic:"+servername+" /user:"+username+" /pass:"+password+"");
}, 500);
setTimeout(function(){
  ws.Exec("mstsc /v:"+servername+"");
}, 800);
setTimeout(function(){
  new ActiveXObject("WScript.Shell").Exec("cmdkey /delete:"+servername+" ");
}, 20000);