<div id="editorDiv" style="display:none;">
<textarea id="myEditor" name="myEditor" cols="30" rows="6"></textarea></div>

  var container = document.getElementById("editorDiv"), editor = document.getElementById("myEditor");

// Get a reference to the DOM node
var div = document.getElementById('foo');

// Create the new text content
var newContent = document.createTextNode('bar');

// Replace the existing

function showSchool(thing) {
         theSection = document.getElementById(thing);
         theSection.style.display = 'table-row';
 }

function pageClosing(e){
  // For most browsers
  e = e || window.event;

  // Ensure that the event object is not null
  if(e){

  var contentEditZone = document.getElementById('rte'); // the DIV with contentEditable=true
 contentEditZone.focus();
 contentEditZone.execCommand("InsertImage", true, imagePath);

<!-- A text input -->
<input type="text" id="myBox" value="" />
<!-- or for a textarea -->
<textarea id="myBox" cols="10" rows="3"></textarea>

/* Set the variable el to the html element using getElementById or similar
el.style.display

window.onload = OnLoadFunction;

Partial Public Class _Default
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    ' Create a fake data source
    Dim dataSource

 sqlCommand.Parameters.Add("MyEmplid", OracleDbType.Varchar2, 100).Value = emplid;

Public Sub New()
 vThingObject = New ArrayOfThings()
End Sub