Use key_name instead of link_id
Some entities do not have a link_id, but all entities are guaranteed
to have a key_name (or an id).
.panel_wrapper div.current {
height: 290px;
}
#id, #style, #title, #dir, #hreflang, #lang, #classlist, #tabindex, #accesskey {
width: 200px;
}
#events_panel input {
width: 200px;
}