帮看下油猴的脚本

function ClawShotCity(){
if(GetCurrentLocation().indexOf('Claw Shot City') < 0)
return;

var cheeseArmed = getPageVariable('user.bait_name');
if(cheeseArmed.indexOf('Checkmate') > -1)
checkThenArm(null, 'bait', 'Gouda');
window.setInterval(function () { fireEvent(document.getElementsByClassName('open active_poster')[0], 'click'); }, 5000);

window.setInterval(function () { fireEvent(document.getElementsByClassName('treasureMapPopup-cancel')[0], 'click'); }, 5000);


以上都 OK 我现在需要再点击最后个
<a href="#" class="treasureMapPopup-action-button highlight" onclick="app.views.TreasureMapView.map.discard(this); return false;">Leave</a>


但是因为其他地方也有 类似的 class 比如有个<a class="treasureMapPopup-action-button highlight" href="#" onclick="app.views.TreasureMapView.map.toggleTabState('upgradeMap'); return false;">UPGRADE</a>
然后我想点击 leave
改怎么写最后步呢