Index: trunk/admin/include/mainscript.php
===================================================================
diff -u -r3145 -r3736
--- trunk/admin/include/mainscript.php	(.../mainscript.php)	(revision 3145)
+++ trunk/admin/include/mainscript.php	(.../mainscript.php)	(revision 3736)
@@ -64,11 +64,8 @@
 $monthpos = (int)DateFieldOrder($format,"month");
 $daypos = (int)DateFieldOrder($format,"day");
 
-$ampm = "false";
-if($objConfig->Get("ampm_time")=="1")
-{
-    $ampm = "true";
-}
+$ampm =  is12HourMode() ? 'true' : 'false';
+
 $SiteName = addslashes( strip_tags( $GLOBALS['objConfig']->Get('Site_Name') ) );
 
 require_once($pathtoroot.$admin."/lv/js/js_lang.php");