const TURMA = 1;
document.getElementsByName("disc_TRO1")[0].value = "mat147";
document.getElementsByName("tt_TRO1")[0].value = TURMA;

function loop() {
document.getElementsByName("btSimulacao")[0].click();
if ( typeof(document.getElementsByName(btEfetiva)[0]) !== 'undefined') document.getElementsByName(btEfetiva)[0].click();
}
window.setInterval(loop, 500);