奇怪代码

  //function initApp() {
    //var  name_list_span=document.getElementById("name_list");
    // document.getElementById("name_list").onclick = function(){
     //var opopup = window.createPopup(); //IE5.5+
     //alert("d");
    //}
//}

    function initApp() {
        document.getElementById("name_list").onclick=function() {
            alert("d");
        }
    }

<span id="name_list" style="cursor:hand; background-color:#000; width:100px; height:20px;text-align:center; color:white;">学校列表</span><input type="text" id="SchoolName" />
<script type="text/javascript">
    initApp();
</script>