- access most globals by their $_XYZ['varname'] name

- fix some code errors and typos (missing $ in front of variable names
and so on)
- fixed a lot of warnings that would have been thrown when error_reporting
is set to show notices (if(isset($variable))) instead of if($variable) for
example)

stdquery.php

@@ -17,9 +17,9 @@ opendb();
 
 if(loggedin())
 {
-    if($current->getpref("query:hide_header") == "yes")
+    if($_SESSION['current']->getpref("query:hide_header") == "yes")
 	disable_header();
-    if($current->getpref("query:hide_sidebar") == "yes")
+    if($_SESSION['current']->getpref("query:hide_sidebar") == "yes")
 	disable_sidebar();
 }