I need to convert following jquery into prototype. How can I do it ?
$('.exercise-main .menu li').removeClass('current');
<div class="exercise-main">
<div class="menu">
<ul id="myList">
<li class="firstTab current" ></li>
<li class="secondTab"></li>
<li class="thirdTab"></li>
</ul>
</div>
</div>