Fix image url for admin site

admin/templates/default/web_sale.edit.php

@@ -133,7 +133,7 @@ var UPLOAD_SITE_URL = "<?php echo UPLOAD_SITE_URL; ?>";
         </div>
       </form>
       <iframe name="image_upload" style='display:none'></iframe>
-      <span class="thumb size-150x144"> <img id="dialog_item_image" src="<?php echo $val['img_name'];?>"  onload="javascript:DrawImage(this,150,144);"></span>
+      <span class="thumb size-150x144"> <img id="dialog_item_image" src="<?php echo UPLOAD_SITE_URL. DS.$val['img_name'];?>"  onload="javascript:DrawImage(this,150,144);"></span>