diff --git a/adminer/static/editing.js b/adminer/static/editing.js
index cdd9e1e1..923ad55f 100644
--- a/adminer/static/editing.js
+++ b/adminer/static/editing.js
@@ -63,6 +63,9 @@ function typePassword(el, disable) {
 	}
 }
 
+/** Hide or show some login rows for selected driver
+* @param HTMLSelectElement
+*/
 function loginDriver(driver) {
 	var trs = parentTag(driver, 'table').rows;
 	for (var i=1; i < trs.length - 1; i++) {