instiki/app/views/wiki/edit.rhtml

<%- 
  @title = "Editing #{@page.name.escapeHTML}"
  @content_width = 720
  @hide_navigation = true
-%>

<div id="MarkupHelp">
  <%= render(:file => "#{@web.markup}_help") %>
  <%= render(:file => 'wiki_words_help') %>
</div>

	<% form_tag({ :action => 'save', :web => @web.address, :id => @page.name },
	             { 'id' => 'editForm', 'method' => 'post', 'onsubmit' => 'cleanAuthorName()',
	               'accept-charset' => 'utf-8' }) do %>
	   <div>	
		<textarea name="content" id="content" rows="24" cols="60"><%= h(flash[:content] || 
                         ((params['content'] && params['content'].is_utf8?) ?  params['content'] : @page.content).purify) %></textarea>
<% if @page_name != 'HomePage' -%>
	   <p>
	      <%= check_box_tag :alter_title, value = "1", checked=false,
	         'onchange' => "toggleVisibility();" %> <label for="alter_title">Change page name.</label><br/>
	      <span id="title_change" style="display:none"><label for="new_name">New name:</label> <%= text_field_tag :new_name, h(@page.name.purify),
			        :onblur => "addRedirect();"  %></span>
	   </p>
<% else -%>
       <%= hidden_field_tag 'new_name', @page_name %>
<% end%> 
		<div id="editFormButtons">
			<input type="submit" value="Submit" accesskey="s"/> as 
			<%= text_field_tag :author, h(@author.purify), 
			        :onfocus => "this.value == 'AnonymousCoward' ? this.value = '' : true;",
			        :onblur  => "this.value == '' ? this.value = 'AnonymousCoward' : true" %>
			| 
			<span>
				<%= link_to('Cancel', {:web => @web.address, :action => 'cancel_edit', :id => @page.name},
				      {:accesskey => 'c'}) %> 
                <span class="unlock">(unlocks page)</span>
			</span>
		</div>
	   </div>
	<%- end -%>

<script type="text/javascript">
<!--//--><![CDATA[//><!--
function toggleVisibility() {
  var span = document.getElementById('title_change');
  if (span.style.display =='inline') {
     span.style.display ='none';
     document.getElementById('new_name').value = "<%= @page.name %>";
     var content = document.getElementById('content').value
     document.getElementById('content').value = content.replace(/\[\[!redirects <%= Regexp.escape(@page.name) %>\]\]\n/, '')
     }
  else
     span.style.display ='inline'
}

function addRedirect(){
  if (document.getElementById('new_name').value != "<%= @page.name %>" ) {
    var content = document.getElementById('content');
    content.value = '[[!redirects <%= @page.name %>]]\n' + content.value
    }
}

function cleanAuthorName() {
  if (document.getElementById('authorName').value == "") {
    document.getElementById('authorName').value = 'AnonymousCoward';
  }
}

document.forms["editForm"].elements["content"].focus();
//--><!]]>
</script>