instiki/app/views/wiki/new.rhtml

<% 
  @title = "Creating #{CGI.escapeHTML(WikiWords.separate(@page_name))}"
  @content_width = 720
  @hide_navigation = true
%>

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

<div id="editForm">
	<% form_tag({ :action => 'save', :web => @web.address, :id => @page_name },
	        { 'id' => 'editForm', 'method' => 'post', 'onSubmit' => 'cleanAuthorName();', 'accept-charset' => 'utf-8' }) do %>
	<div class="hidden"><textarea name="content1" id="content1">iam empty</textarea></div>
	    <textarea name="content" id="content"><%= h(flash[:content] || '') %></textarea>
		<div id="editFormButtons">
		    <input type="submit" value="Submit" accesskey="s"/> as 
		    <%= text_field_tag :author, @author, 
		        :onfocus => "this.value == 'AnonymousCoward' ? this.value = '' : true;",
		        :onblur  => "this.value == '' ? this.value = 'AnonymousCoward' : true" %> 
        </div>
	<% end %>
</div>

<script type="text/javascript">
function cleanAuthorName() {
  if (document.getElementById('authorName').value == "") {
    document.getElementById('authorName').value = 'AnonymousCoward';
  }
}
document.forms["editForm"].elements["content"].focus();
</script>