Index: C:/Program Files/Apache Group/Apache2/htdocs/redmine/app/views/wiki/edit.rhtml
===================================================================
--- C:/Program Files/Apache Group/Apache2/htdocs/redmine/app/views/wiki/edit.rhtml	(revision 1023)
+++ C:/Program Files/Apache Group/Apache2/htdocs/redmine/app/views/wiki/edit.rhtml	(working copy)
@@ -29,3 +29,22 @@
 <% end %>
 
 <% set_html_title @page.pretty_title %>
+<script type="text/javascript">
+var preveiwTimerId; 
+var previewFunc = function(){ 
+new Ajax.Updater('preview', '/wiki/1/Docs/preview', 
+{asynchronous:true, evalScripts:true, method:'post', 
+onComplete:function(request){ 
+Element.setStyle($('content_text'),{'width':'50%'}); 
+Element.setStyle($('preview'), 
+{'position':'absolute','width':'48%','top':'146px','right':'10px'}); 
+}, parameters:Form.serialize('wiki_form')}); 
+return false; 
+} 
+var previewTimerFunc = function(){ 
+clearTimeout(preveiwTimerId); 
+preveiwTimerId = setTimeout(previewFunc,1000); 
+
+} 
+Event.observe('content_text', 'keyup', previewTimerFunc, false); 
+</script>
\ No newline at end of file