if (!event.shiftKey && !event.ctrlKey && !event.altKey) {
unmarkAllRows();
markedRowId = parent.ctdlRowId;
+ document.getElementById("preview_pane").innerHTML = "";
new Ajax.Updater('preview_pane', 'msg/'+msgId, {method: 'get'});
markRow(parent);
new Ajax.Request('ajax_servcmd', {