diff --git a/boards/static/js/refpopup.js b/boards/static/js/refpopup.js
--- a/boards/static/js/refpopup.js
+++ b/boards/static/js/refpopup.js
@@ -57,7 +57,7 @@ function showPostPreview(e) {
     cln.innerHTML = "<div class=\"post\">" + gettext('Loading...') + "</div>";
 
     if($('div[id='+pNum+']').length > 0) {
-        var postdata = $('div[id='+pNum+']').wrap("<div/>").parent().html();
+        var postdata = $('div[id='+pNum+']').clone().wrap("<div/>").parent().html();
 
         mkPreview(cln, postdata);
     } else {