Fix ad image date selector

app/views/admin/ad_images/_form.html.erb

@@ -23,8 +23,8 @@
                   <div id="calendarRange">
                       <div class="input-append">
                           <span class="showDate"></span><span class="add-on btn">▼</span>
-													<%= f.hidden_field :parse_post_date %>
-													<%= f.hidden_field :parse_unpost_date%>
+													<%= f.hidden_field :parse_post_date,:value => @ad_image.post_date.strftime('%Y / %m / %d') %>
+													<%= f.hidden_field :parse_unpost_date,:value => @ad_image.unpost_date.strftime('%Y / %m / %d')%>
 
                       </div>
                       <div id="widgetCalendar">