- $theme = get_pref( "USER_CSS_THEME", $_SESSION["uid"], false);
- if ($theme && file_exists("themes/$theme")) {
- stylesheet_tag("themes/$theme");
+ $theme = get_pref("USER_CSS_THEME", false, false);
+ if ($theme && theme_valid("$theme")) {
+ echo stylesheet_tag(get_theme_path($theme));