Release preparation, documentation, fixing vc bugs
diff --git a/dev/scss/header/datepicker.scss b/dev/scss/header/datepicker.scss
index 8a3fbcd..806ca1e 100644
--- a/dev/scss/header/datepicker.scss
+++ b/dev/scss/header/datepicker.scss
@@ -6,6 +6,7 @@
 div.datepicker {
   display: inline-block;
   position: absolute;
+  z-index: 8000;
   font-size: 80%;
   padding: 4pt;
   box-shadow: $choose-box-shadow;
@@ -21,7 +22,7 @@
   > div.month {
     float: right;
   }
-  
+
   @include choose-item;
   > div > span {
     display: inline-block;
@@ -59,6 +60,9 @@
       &:hover {
 	@include choose-hover;
       }
+      &.selected {
+	@include choose-active;
+      }
     }
   }
   table {