JavaScript show and hide UL list

From , 5 Years ago, written in JavaScript, viewed 155 times.

<ul id="rightNav">
  <li>
    <h2 class="rightNavItem"><a href="#">Show & Hide</a></h2>
    <ul>
      <li><a href="">Links etc here</a></li>
    </ul>
  </li>
</ul>
 
<script>
function enableRightNavExpand() {
        if (!document.getElementById) return false;
        if (!document.getElementById("rightNav")) return false;
        var nav = document.getElementById("rightNav");
        var navItem = nav.getElementsByTagName("li");
        for (var i = 0; i < navItem.length; i++){
                navItem[i].onclick=function() {
                        if (this.className == "selected") {
                                this.className = "";
                        }
                        else if (this.className == ""){
                                this.className = "selected";
                        }
                }
        }
}
</script>
//javascript/2409

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JavaScript show and hide UL list

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